Materiały źródłowe

• #1 Rosacea – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK557574/

  The exact etiology of rosacea is not fully understood. Genetics, immune reaction, microorganisms, environmental factors, and neurovascular dysregulation are among the known etiological factors for the development of rosacea. […] A genetic predisposition is supported by a higher incidence of disease in patients with a family history of rosacea. Furthermore, specific human leucocyte antigen (HLA) loci have been identified in patients with rosacea. […] Among microorganisms, Demodex mites appear to play a role in rosacea as they are seen in higher numbers on rosacea-affected skin, though it is not clear if this is a cause or consequence of rosacea. Helicobacter pylori is another organism with reported association with rosacea.

• #2 Ocular Rosacea: Background, Pathophysiology, Epidemiology

  https://emedicine.medscape.com/article/1197341-overview

  Rosacea is a common inflammatory dermatologic condition that affects the midface and eyes. Although the etiology of rosacea is not fully understood, an augmented response of the innate immune system and neurovascular pathways to certain triggers are considered to be major factors in the chronic inflammatory process associated with this condition. […] More than 50% of patients with rosacea have ocular manifestations, and ocular findings may be the first manifestation of rosacea in some patients. […] A variety of rosacea triggers have been described including skin colonization with Demodex mites (along with bacteria in their gut) and Staphylococcus epidermidis. […] Eradication of Helicobacter pylori has been shown to improve rosacea in some patients, and the organism may play a role in the pathogenesis of inflammation in rosacea. […] Four distinct rosacea subtypes have been described: erythematotelangiectatic rosacea, papulopustular rosacea, phymatous rosacea, and ocular rosacea.

• #3 Ocular Rosacea – Optometrists.org

  https://www.optometrists.org/general-practice-optometry/guide-to-eye-conditions/eye-conditions/ocular-rosacea/

  Of the more than 16 million people in the United States who have rosacea, more than 60% will experience eye-related symptoms. […] Ocular rosacea is a common inflammatory eye condition that causes redness, itching, and a burning sensation around the eyes. […] Researchers aren’t sure of the exact reason as to why ocular rosacea happens however, they have found that 85% of people with ocular rosacea have blocked oil glands at the edges of their eyelids. […] Other factors causing ocular rosacea include: Heredity, Eyelash mites, known as Demodex, Blocked glands in the eyelids, Bacterial involvement, Environmental factors.

• #4 Ocular Rosacea: What Your Eyes May Be Trying to Tell You | Rosacea.org

  https://www.rosacea.org/blog/2015/january/ocular-rosacea-what-your-eyes-may-be-trying-to-tell-you

  Another study that examined the eyelashes of 38 ocular rosacea patients found the presence of bacteria associated with Demodex mites, and noted that the patients may have been affected by a reaction to the proteins produced by the bacteria, a possible reaction to the mites themselves or colonization by other microbes. […] According to some reports, about 20 percent of rosacea patients develop ocular rosacea before the facial symptoms appear, and ocular rosacea patients are then often referred to dermatologists by their eye doctors.

• #5 Rosacea – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK557574/

  The exact etiology of rosacea is not fully understood. Genetics, immune reaction, microorganisms, environmental factors, and neurovascular dysregulation are among the known etiological factors for the development of rosacea. […] A genetic predisposition is supported by a higher incidence of disease in patients with a family history of rosacea. Furthermore, specific human leucocyte antigen (HLA) loci have been identified in patients with rosacea. […] Among microorganisms, Demodex mites appear to play a role in rosacea as they are seen in higher numbers on rosacea-affected skin, though it is not clear if this is a cause or consequence of rosacea. Helicobacter pylori is another organism with reported association with rosacea.

• #6 Ocular Rosacea – EyeWiki

  https://eyewiki.org/Ocular_Rosacea

  3. Microbial Factors-Demodex folliculorum, a microscopic mite commonly found on the skin, is present in higher densities in rosacea patients. Its interaction with the immune system may induce inflammation. Role of Helicobacter pylori infection has been suggested, as this bacterium produces vasoactive substances that might exacerbate rosacea symptoms. […] 4. Genetic Predisposition-A family history of rosacea increases the likelihood of developing the condition, though specific genetic mutations have not been clearly identified. […] 5. Ultraviolet Radiation-Prolonged UV exposure damages the dermal matrix and worsens inflammation, contributing to persistent erythema and telangiectasia. […] 6. Environmental and Lifestyle Triggers-Extreme temperatures, wind, humidity, and exposure to irritants like skincare products or cosmetics can worsen symptoms. Consumption of alcohol, caffeine, or spicy foods and emotional stress may exacerbate the condition.

• #7 Rosacea – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK557574/

  The exact etiology of rosacea is not fully understood. Genetics, immune reaction, microorganisms, environmental factors, and neurovascular dysregulation are among the known etiological factors for the development of rosacea. […] A genetic predisposition is supported by a higher incidence of disease in patients with a family history of rosacea. Furthermore, specific human leucocyte antigen (HLA) loci have been identified in patients with rosacea. […] Among microorganisms, Demodex mites appear to play a role in rosacea as they are seen in higher numbers on rosacea-affected skin, though it is not clear if this is a cause or consequence of rosacea. Helicobacter pylori is another organism with reported association with rosacea.

• #8 Rosacea: Diagnosis and Treatment | AAFP

  https://www.aafp.org/pubs/afp/issues/2015/0801/p187.html

  Rosacea is a chronic facial skin condition of unknown cause. […] The etiology of rosacea is unknown but is likely multifactorial. Factors involved in the pathophysiology include the dense presence of sebaceous glands on the face, the physiology of the nerve innervation, and the vascular composition of the skin. […] A predilection for fair-skinned individuals of Celtic or northern European descent suggests a genetic component to rosacea. […] Ocular rosacea is managed with lid hygiene, topical cyclosporine, and topical or systemic antibiotics. […] More than 50% of patients with cutaneous rosacea have ocular symptoms that may include tearing, foreign body sensation, itching, photophobia, and blurred vision.

• #9 Ocular Rosacea: Symptoms, Causes & Treatment | MyVision.org

  https://myvision.org/eye-conditions/ocular-rosacea/

  Ocular rosacea is more likely to develop in people who meet the following criteria: Between 30 and 50 years old, Women, People with light skin, Western European ethnic background, especially from England and Scotland. […] While rosacea has been linked to certain autoimmune disorders, no one knows exactly what causes the condition. It has not been proven that it is caused by an autoimmune condition.

• #10 Ocular Rosacea – EyeWiki

  https://eyewiki.org/Ocular_Rosacea

  Acne rosacea, commonly known simply as rosacea, is a chronic inflammatory skin condition that primarily affects the central face. Its exact cause remains unclear, but it is believed to result from a combination of genetic, environmental, and immune-related factors. The following are the main etiologies associated with acne rosacea: […] […] 1. Vascular Dysregulation-Abnormalities in the cutaneous blood vessels can lead to flushing, persistent redness, and the development of telangiectasia (visible blood vessels). Triggers such as heat, alcohol, spicy foods, and emotional stress exacerbate vasodilation. […] 2. Immune Dysfunction-Overactivity of the innate immune system, particularly elevated levels of antimicrobial peptides like cathelicidins, leads to chronic inflammation and skin barrier dysfunction. Dysregulation of inflammatory pathways can contribute to skin hypersensitivity.

• #11 Rosacea | NHS inform

  https://www.nhsinform.scot/illnesses-and-conditions/skin-hair-and-nails/rosacea/

  The exact cause of rosacea is unknown, although a number of possible factors have been suggested, including abnormalities in the blood vessels of the face and a reaction to microscopic mites commonly found on the face. […] Some experts believe abnormalities in the blood vessels of the face may be a major contributing factor for rosacea. This may explain symptoms of flushing, persistent redness and visible blood vessels. […] Recent research has shown external triggers such as ultraviolet (UV) light, spicy food, alcohol (particularly red wine), exercise, stress, heat and cold can lead to the activation of certain molecules within the skin called peptides. […] Microscopic mites called demodex folliculorum usually live harmlessly on human skin, but people with rosacea have particularly large numbers, which may play a role in the condition.

• #12 Ocular Rosacea Clinical Presentation: History, Physical, Causes

  https://emedicine.medscape.com/article/1197341-clinical

  Flushing triggers: These include alcohol, hot beverages, tobacco, spicy foods, vasodilating medications, and emotional stress. […] UV light: This is postulated to decrease the competence of already dilated cutaneous vasculature, increasing persistent erythema and telangiectasias. […] Demodex: This mite, which is part of the skin’s normal flora, leads to stimulation of the innate immune system. Bacteria in the gut of Demodex may be the inciting factor rather than the Demodex itself. […] S epidermidis: Hyper-reactivity of the innate immune system in rosacea patients makes them sensitive to this normal skin flora. […] H pylori: This is postulated to be strongly correlated with rosacea. This is possibly due to a flush-inducing toxin present in H pylori. […] Positive family history: Some studies have shown a higher rate of positive family history of rosacea in patients with this dermatologic disorder than in skin-healthy controls. […] Smoking: Some studies have shown an increased history of smoking in patients with rosacea as compared with skin-healthy controls.

• #13 Ocular Rosacea – EyeWiki

  https://eyewiki.org/Ocular_Rosacea

  7. Neurovascular Dysregulation-Dysregulation of nerve function in the skin can amplify flushing, burning, and stinging sensations seen in rosacea patients. Understanding these etiological factors is crucial for tailoring effective treatment strategies and advising patients on lifestyle modifications to minimize triggers.

• #14 Rosacea: A Misunderstood, Serious Medical Condition

  https://www.ahdbonline.com/payer-perspectives-in-dermatology/1469-article-1469

  Del Rosso and colleagues recently elaborated on what they call the 2 inherent characteristics of rosacea-prone skin: neurovascular dysregulation and inflammation that produce physiochemical and structural changes in the skin. […] With this hyperreactive immune system as background, environmental triggers can incite an exaggerated immune response. This triggering of the innate immune response system induces a signaling cascade of inflammatory factors that lead to chronic inflammation and an altered vascular state. […] In explaining the facial erythema (or redness) of rosacea, Del Rosso and colleagues pulled all these factors together to construct a picture of inflammation and vascular reactivity that includes an augmented innate immune response (ie, an increase in TLR2, cathelicidin precursors and peptides, and kallikrein-5); changes in the vasculature (ie, increased vascular endothelial growth factor, increased mast cells, and downstream effects of LL-37); neurovascular dysregulation (ie, vascular response, vasodilation, and neurosensory symptoms); dermal matrix degradation (ie, an increase in reactive oxygen species and matrix metalloproteinases, and a decrease in antioxidant reserve); vasodilation (ie, neurovascular dysfunction and increased nitric oxide leading to dilation and increased blood flow); and rosacea dermatitis (ie, stratum corneum barrier dysfunction and an increase in cytokines). […] Ocular rosacea is characterized by foreign-body sensation in the eye, burning, stinging, itchy eyes; ocular photosensitivity (light sensitivity); blurred vision, telangiectasia of the sclera or other parts of the eye, or periorbital edema.

• #15 Ocular Rosacea – EyeWiki

  https://eyewiki.org/Ocular_Rosacea

  Acne rosacea, commonly known simply as rosacea, is a chronic inflammatory skin condition that primarily affects the central face. Its exact cause remains unclear, but it is believed to result from a combination of genetic, environmental, and immune-related factors. The following are the main etiologies associated with acne rosacea: […] […] 1. Vascular Dysregulation-Abnormalities in the cutaneous blood vessels can lead to flushing, persistent redness, and the development of telangiectasia (visible blood vessels). Triggers such as heat, alcohol, spicy foods, and emotional stress exacerbate vasodilation. […] 2. Immune Dysfunction-Overactivity of the innate immune system, particularly elevated levels of antimicrobial peptides like cathelicidins, leads to chronic inflammation and skin barrier dysfunction. Dysregulation of inflammatory pathways can contribute to skin hypersensitivity.

• #16 Cutaneous and ocular rosacea: Common and specific physiopathogenic mechanisms and study models

  https://pmc.ncbi.nlm.nih.gov/articles/PMC8131178/

  Overall, all these phenomena in the skin and eye act in synergy to maintain chronic inflammation at the cutaneous, epidermal, conjunctival, and perivascular interface, eventually leading to secondary fibrosis. […] The infiltration of mast cells and the release of proinflammatory mediators, such as interleukin-1 (IL-1), IL-6, IL-17, interferon- (IFN-), matrix metalloproteinase-2 (MMP-2), MMP-9, tumor necrosis factor- (TNF-), activated by nuclear factor-B (NF-B), contribute to the inflammatory signs. […] In the eyelid biopsies of patients with ocular rosacea, TLR-4 expression was significantly increased compared with normal subjects. […] In tears, rosacea patients have increased levels of IL-1, IL-1, IL-16, TNF-, monocyte chemoattractant protein-1 (MCP-1), MMP-8, and MMP-9. […] The link between LL-37 and rosacea was demonstrated by Yamasaki et al. in an inflammatory skin mouse model induced by the injection of LL-37, developing telangiectasia, erythema, and inflammation.

• #17 Cutaneous and ocular rosacea: Common and specific physiopathogenic mechanisms and study models

  https://pmc.ncbi.nlm.nih.gov/articles/PMC8131178/

  Overall, all these phenomena in the skin and eye act in synergy to maintain chronic inflammation at the cutaneous, epidermal, conjunctival, and perivascular interface, eventually leading to secondary fibrosis. […] The infiltration of mast cells and the release of proinflammatory mediators, such as interleukin-1 (IL-1), IL-6, IL-17, interferon- (IFN-), matrix metalloproteinase-2 (MMP-2), MMP-9, tumor necrosis factor- (TNF-), activated by nuclear factor-B (NF-B), contribute to the inflammatory signs. […] In the eyelid biopsies of patients with ocular rosacea, TLR-4 expression was significantly increased compared with normal subjects. […] In tears, rosacea patients have increased levels of IL-1, IL-1, IL-16, TNF-, monocyte chemoattractant protein-1 (MCP-1), MMP-8, and MMP-9. […] The link between LL-37 and rosacea was demonstrated by Yamasaki et al. in an inflammatory skin mouse model induced by the injection of LL-37, developing telangiectasia, erythema, and inflammation.

• #18 Ocular rosacea

  https://dermnetnz.org/topics/ocular-rosacea

  Ocular rosacea is a form of rosacea that involves the eyelids and the front of the eye. […] The exact cause of ocular rosacea is unknown. However, immunological factors, micro-organisms on the skin surface, and reactive blood vessels are involved. […] Demodex mites, normal inhabitants of eyelash follicles, may stimulate inflammation in ocular rosacea and anterior blepharitis. […] Bacteria may play a role, as ocular rosacea improves with antibiotics. One theory is that bacterial lipases release toxic free fatty acids and glycerides from lipids secreted by meibominan glands. […] The pro-inflammatory cytokine interleukin 1-alpha (IL-1) increases metallomatrix protein-9 (MMP-9) in the tear fluid. Upregulation of MMP-9 damages ocular tissues.

• #19 Cutaneous and ocular rosacea: Common and specific physiopathogenic mechanisms and study models

  https://pmc.ncbi.nlm.nih.gov/articles/PMC8131178/

  Overall, all these phenomena in the skin and eye act in synergy to maintain chronic inflammation at the cutaneous, epidermal, conjunctival, and perivascular interface, eventually leading to secondary fibrosis. […] The infiltration of mast cells and the release of proinflammatory mediators, such as interleukin-1 (IL-1), IL-6, IL-17, interferon- (IFN-), matrix metalloproteinase-2 (MMP-2), MMP-9, tumor necrosis factor- (TNF-), activated by nuclear factor-B (NF-B), contribute to the inflammatory signs. […] In the eyelid biopsies of patients with ocular rosacea, TLR-4 expression was significantly increased compared with normal subjects. […] In tears, rosacea patients have increased levels of IL-1, IL-1, IL-16, TNF-, monocyte chemoattractant protein-1 (MCP-1), MMP-8, and MMP-9. […] The link between LL-37 and rosacea was demonstrated by Yamasaki et al. in an inflammatory skin mouse model induced by the injection of LL-37, developing telangiectasia, erythema, and inflammation.

• #20 Rosacea – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK557574/

  The exact etiology of rosacea is not fully understood. Genetics, immune reaction, microorganisms, environmental factors, and neurovascular dysregulation are among the known etiological factors for the development of rosacea. […] A genetic predisposition is supported by a higher incidence of disease in patients with a family history of rosacea. Furthermore, specific human leucocyte antigen (HLA) loci have been identified in patients with rosacea. […] Among microorganisms, Demodex mites appear to play a role in rosacea as they are seen in higher numbers on rosacea-affected skin, though it is not clear if this is a cause or consequence of rosacea. Helicobacter pylori is another organism with reported association with rosacea.

• #21 Rosacea | NHS inform

  https://www.nhsinform.scot/illnesses-and-conditions/skin-hair-and-nails/rosacea/

  The exact cause of rosacea is unknown, although a number of possible factors have been suggested, including abnormalities in the blood vessels of the face and a reaction to microscopic mites commonly found on the face. […] Some experts believe abnormalities in the blood vessels of the face may be a major contributing factor for rosacea. This may explain symptoms of flushing, persistent redness and visible blood vessels. […] Recent research has shown external triggers such as ultraviolet (UV) light, spicy food, alcohol (particularly red wine), exercise, stress, heat and cold can lead to the activation of certain molecules within the skin called peptides. […] Microscopic mites called demodex folliculorum usually live harmlessly on human skin, but people with rosacea have particularly large numbers, which may play a role in the condition.

• #22 Ocular rosacea

  https://dermnetnz.org/topics/ocular-rosacea

  Ocular rosacea is a form of rosacea that involves the eyelids and the front of the eye. […] The exact cause of ocular rosacea is unknown. However, immunological factors, micro-organisms on the skin surface, and reactive blood vessels are involved. […] Demodex mites, normal inhabitants of eyelash follicles, may stimulate inflammation in ocular rosacea and anterior blepharitis. […] Bacteria may play a role, as ocular rosacea improves with antibiotics. One theory is that bacterial lipases release toxic free fatty acids and glycerides from lipids secreted by meibominan glands. […] The pro-inflammatory cytokine interleukin 1-alpha (IL-1) increases metallomatrix protein-9 (MMP-9) in the tear fluid. Upregulation of MMP-9 damages ocular tissues.

• #23 Cutaneous and ocular rosacea: Common and specific physiopathogenic mechanisms and study models

  https://pmc.ncbi.nlm.nih.gov/articles/PMC8131178/

  Few of the conducted studies have been performed in the eye, and there is no clear evidence implicating LL-37 in ocular rosacea. […] The role of mast cells was further confirmed when LL-37 injection in mice knocked out for mast cells did not develop any phenotype. […] In the context of the eye, there is no information in the literature linking this molecule to ocular rosacea and ocular surface pathologies. […] Demodex mites are other factors that may be related to the initiation or worsening of ocular and skin rosacea. […] In ophthalmology, Demodex is also known to play a role in chronic blepharitis, conjunctiva inflammation, corneal lesions, and dysfunction of the meibomian glands, all characteristics of ocular rosacea. […] The inflammatory reaction could be aggravated by resident bacteria, such as Bacillus oleronius, released by dying mites, leading to the chemotaxis of more immune cells, such as neutrophils.

• #24 Cutaneous and ocular rosacea: Common and specific physiopathogenic mechanisms and study models

  https://pmc.ncbi.nlm.nih.gov/articles/PMC8131178/

  Few of the conducted studies have been performed in the eye, and there is no clear evidence implicating LL-37 in ocular rosacea. […] The role of mast cells was further confirmed when LL-37 injection in mice knocked out for mast cells did not develop any phenotype. […] In the context of the eye, there is no information in the literature linking this molecule to ocular rosacea and ocular surface pathologies. […] Demodex mites are other factors that may be related to the initiation or worsening of ocular and skin rosacea. […] In ophthalmology, Demodex is also known to play a role in chronic blepharitis, conjunctiva inflammation, corneal lesions, and dysfunction of the meibomian glands, all characteristics of ocular rosacea. […] The inflammatory reaction could be aggravated by resident bacteria, such as Bacillus oleronius, released by dying mites, leading to the chemotaxis of more immune cells, such as neutrophils.

• #25 Ocular Rosacea: Background, Pathophysiology, Epidemiology

  https://emedicine.medscape.com/article/1197341-overview

  Rosacea is a common inflammatory dermatologic condition that affects the midface and eyes. Although the etiology of rosacea is not fully understood, an augmented response of the innate immune system and neurovascular pathways to certain triggers are considered to be major factors in the chronic inflammatory process associated with this condition. […] More than 50% of patients with rosacea have ocular manifestations, and ocular findings may be the first manifestation of rosacea in some patients. […] A variety of rosacea triggers have been described including skin colonization with Demodex mites (along with bacteria in their gut) and Staphylococcus epidermidis. […] Eradication of Helicobacter pylori has been shown to improve rosacea in some patients, and the organism may play a role in the pathogenesis of inflammation in rosacea. […] Four distinct rosacea subtypes have been described: erythematotelangiectatic rosacea, papulopustular rosacea, phymatous rosacea, and ocular rosacea.

• #26 Ocular Rosacea: Background, Pathophysiology, Epidemiology

  https://emedicine.medscape.com/article/1197341-overview

  Rosacea is a common inflammatory dermatologic condition that affects the midface and eyes. Although the etiology of rosacea is not fully understood, an augmented response of the innate immune system and neurovascular pathways to certain triggers are considered to be major factors in the chronic inflammatory process associated with this condition. […] More than 50% of patients with rosacea have ocular manifestations, and ocular findings may be the first manifestation of rosacea in some patients. […] A variety of rosacea triggers have been described including skin colonization with Demodex mites (along with bacteria in their gut) and Staphylococcus epidermidis. […] Eradication of Helicobacter pylori has been shown to improve rosacea in some patients, and the organism may play a role in the pathogenesis of inflammation in rosacea. […] Four distinct rosacea subtypes have been described: erythematotelangiectatic rosacea, papulopustular rosacea, phymatous rosacea, and ocular rosacea.

• #27 Ocular Rosacea Clinical Presentation: History, Physical, Causes

  https://emedicine.medscape.com/article/1197341-clinical

  Flushing triggers: These include alcohol, hot beverages, tobacco, spicy foods, vasodilating medications, and emotional stress. […] UV light: This is postulated to decrease the competence of already dilated cutaneous vasculature, increasing persistent erythema and telangiectasias. […] Demodex: This mite, which is part of the skin’s normal flora, leads to stimulation of the innate immune system. Bacteria in the gut of Demodex may be the inciting factor rather than the Demodex itself. […] S epidermidis: Hyper-reactivity of the innate immune system in rosacea patients makes them sensitive to this normal skin flora. […] H pylori: This is postulated to be strongly correlated with rosacea. This is possibly due to a flush-inducing toxin present in H pylori. […] Positive family history: Some studies have shown a higher rate of positive family history of rosacea in patients with this dermatologic disorder than in skin-healthy controls. […] Smoking: Some studies have shown an increased history of smoking in patients with rosacea as compared with skin-healthy controls.

• #28 Advanced eye rosacea treatment | The London Clinic

  https://www.thelondonclinic.co.uk/services/conditions/eye-rosacea

  Eye rosacea is inflammation that causes redness, itching and burning around the eye area. […] No one knows the exact cause of skin rosacea including eye rosacea, but its thought to be a response to several genetic and environmental factors including: […] Bacterial infections either on the skin or in the gut which cause blood vessel abnormalities and disrupt the health of the skin […] Helicobacter pylori bacteria in the gut stimulate the production of a protein (bradykinin) that causes blood vessels in the skin to dilate […] Microscopic mite infection (Demodex folliculorum) blocking oil glands in the skin […] Sun damage. […] People who have migraines are at a slightly higher risk of developing rosacea, which may be due to abnormal opening and closing (dilation and constriction) of the blood vessels.

• #29 Ocular Rosacea Clinical Presentation: History, Physical, Causes

  https://emedicine.medscape.com/article/1197341-clinical

  Flushing triggers: These include alcohol, hot beverages, tobacco, spicy foods, vasodilating medications, and emotional stress. […] UV light: This is postulated to decrease the competence of already dilated cutaneous vasculature, increasing persistent erythema and telangiectasias. […] Demodex: This mite, which is part of the skin’s normal flora, leads to stimulation of the innate immune system. Bacteria in the gut of Demodex may be the inciting factor rather than the Demodex itself. […] S epidermidis: Hyper-reactivity of the innate immune system in rosacea patients makes them sensitive to this normal skin flora. […] H pylori: This is postulated to be strongly correlated with rosacea. This is possibly due to a flush-inducing toxin present in H pylori. […] Positive family history: Some studies have shown a higher rate of positive family history of rosacea in patients with this dermatologic disorder than in skin-healthy controls. […] Smoking: Some studies have shown an increased history of smoking in patients with rosacea as compared with skin-healthy controls.

• #30 Rosacea: An Overview of Its Etiological Factors, Pathogenesis, Classification and Therapy Options

  https://www.mdpi.com/2673-6179/3/4/19

  Rosacea is a chronic inflammatory skin condition characterized by skin sensitivity, flushing, centrofacial erythema, papules, and pustules. The condition has been classified into four subtypes: erythematotelangiectatic, papulopustular, phymatous, and ocular rosacea. […] The eyes can also be affected by rosacea, causing conditions such as conjunctivitis, blepharitis, and, rarely, keratitis. […] The pathogenesis of rosacea is complex and involves a variety of factors that can trigger both inflammatory and vascular responses. […] Demodex folliculorum is the predominant microbial agent within the skin that is commonly associated with the development of rosacea. […] Staphylococcus epidermidis is the predominant bacteria that is commensal on the skin. It may play an important role in the pathogenesis of pustular and ocular rosacea, as suggested by a study that isolated S. epidermidis from the pustules and eyelid margins of rosacea patients.

• #31 Cutaneous and ocular rosacea: Common and specific physiopathogenic mechanisms and study models

  https://pmc.ncbi.nlm.nih.gov/articles/PMC8131178/

  Rosacea is a multifactorial disease triggered by favoring factors, the pathogenesis of which remains imperfectly understood. […] The ocular variant of rosacea represents between 10% and 50% of the total rosacea population and is characterized by inflammation of the ocular surface tissues, including the eyelid edge (blepharitis) and eyes (tear film instability, eye irritation, red eyes, eye dryness, conjunctivitis, etc.). […] The mechanisms of rosacea are still unclear. In recent years, a multifactorial pathogenesis with genetic predisposition has been emphasized. […] The molecular steps involved in the pathogenesis of ocular rosacea are not fully known. Meibomian gland dysfunction has been recognized as a major component. […] A link between Demodex infestation and ocular rosacea has also been advocated.

• #32 What Is Ocular Rosacea?

  https://www.webmd.com/eye-health/what-is-ocular-rosacea

  Scientists dont know exactly why it happens, but researchers have found that 85% of people with ocular rosacea have blocked oil glands around the edges of their eyelids. […] Some scientists believe mites — tiny spider-like creatures that live in hair follicles on your face and lashes — can block the glands. […] Others think there may be a link between rosacea and the bacteria that cause digestive infections. […] Another idea is that rosacea is caused by a problem with your blood vessels. […] Genes and your environment may play a part, too.

• #33 Ocular Rosacea: What Your Eyes May Be Trying to Tell You | Rosacea.org

  https://www.rosacea.org/blog/2015/january/ocular-rosacea-what-your-eyes-may-be-trying-to-tell-you

  For many people, eye irritation isnt just a symptom of allergy season or the cold windy air of winter. Its ocular rosacea, a subtype of the disorder that can potentially be very serious if allowed to become severe. […] Found to affect up to 60 percent of rosacea patients in surveys by the National Rosacea Society (NRS), ocular rosacea often results in a watery or bloodshot appearance, irritation and burning or stinging of the eyes. […] A medical study of ocular rosacea patients found that 85 percent had meibomian gland dysfunction. […] Severe ocular rosacea, however, can pose significant consequences if left untreated, including corneal damage and the development of additional blood vessels in the cornea, a condition known as corneal neovascularization. […] Research continues to uncover more information on this rosacea subtype that can lead to better diagnosis.

• #34 Ocular Rosacea & Dry Eye | Dry Eye Treatment Centers of NY and NJ

  https://www.dryeyecare.net/dry-eye-optometrist/ocular-rosacea-and-dry-eye/

  Ocular rosacea is a common inflammatory eye condition that causes redness, itching, and burning sensations around the eyes in many people who have rosacea. […] The exact cause of ocular rosacea is unknown, but researchers have found that 85% of people with the condition have blocked oil glands around the edges of their eyelids. When these glands are blocked they cause dryness and the area around them can get irritated and swollen. This can lead to crust in your eyelashes and itching and redness in your eyes. […] Other potential triggers: Bacterial involvement, Blocked glands in the eyelids, Environmental factors, Eyelash mites, Heredity.

• #35 Ocular rosacea

  https://dermnetnz.org/topics/ocular-rosacea

  Ocular rosacea is a form of rosacea that involves the eyelids and the front of the eye. […] The exact cause of ocular rosacea is unknown. However, immunological factors, micro-organisms on the skin surface, and reactive blood vessels are involved. […] Demodex mites, normal inhabitants of eyelash follicles, may stimulate inflammation in ocular rosacea and anterior blepharitis. […] Bacteria may play a role, as ocular rosacea improves with antibiotics. One theory is that bacterial lipases release toxic free fatty acids and glycerides from lipids secreted by meibominan glands. […] The pro-inflammatory cytokine interleukin 1-alpha (IL-1) increases metallomatrix protein-9 (MMP-9) in the tear fluid. Upregulation of MMP-9 damages ocular tissues.

• #36 Azthena logo with the word Azthena

  https://www.news-medical.net/health/Ocular-Rosacea.aspx

  As with rosacea, the causes of ocular rosacea are not clearly known. Some of the speculated causes of the condition include those similar to skin rosacea: […] Genetic predisposition […] Infection with the bacteria Helicobacter pylori […] Infestation with the parasite Demodex folliculorum […] Seborrhea or dandruff. […] Due to ocular rosacea, the thin layer of lipids or fats over the eye is disrupted and this leads to dry eyes. Dry eyes trigger inflammatory responses leading to itching, watering and redness of the eyes.

• #37 Rosacea: Symptoms, Causes, and Management – DermNet

  https://dermnetnz.org/topics/rosacea

  Rosacea has been associated with depression, hypertension, cardiovascular diseases, anxiety disorder, dyslipidemia, diabetes mellitus, migraine, rheumatoid arthritis, Helicobacter pylori infection, ulcerative colitis, and dementia. […] The pathogenesis of rosacea is thought to be multifactorial and includes: Genetic susceptibility, Altered microbiome of the skin and gut, Neurocutaneous mechanisms, Impaired skin barrier. […] Triggers include ultraviolet (UV) radiation, temperature change, exercise, spicy foods, alcohol, psychological stress, air pollution, and tobacco smoking. […] The most significant environmental trigger is UV radiation; affected skin is more sensitive to exposure. […] Ocular rosacea (lid margin telangiectasia, blepharitis, keratitis/conjunctivitis/sclerokeratitis/anterior uveitis).

• #38 Ocular Rosacea – EyeWiki

  https://eyewiki.org/Ocular_Rosacea

  3. Microbial Factors-Demodex folliculorum, a microscopic mite commonly found on the skin, is present in higher densities in rosacea patients. Its interaction with the immune system may induce inflammation. Role of Helicobacter pylori infection has been suggested, as this bacterium produces vasoactive substances that might exacerbate rosacea symptoms. […] 4. Genetic Predisposition-A family history of rosacea increases the likelihood of developing the condition, though specific genetic mutations have not been clearly identified. […] 5. Ultraviolet Radiation-Prolonged UV exposure damages the dermal matrix and worsens inflammation, contributing to persistent erythema and telangiectasia. […] 6. Environmental and Lifestyle Triggers-Extreme temperatures, wind, humidity, and exposure to irritants like skincare products or cosmetics can worsen symptoms. Consumption of alcohol, caffeine, or spicy foods and emotional stress may exacerbate the condition.

• #39 Ocular Rosacea Clinical Presentation: History, Physical, Causes

  https://emedicine.medscape.com/article/1197341-clinical

  Flushing triggers: These include alcohol, hot beverages, tobacco, spicy foods, vasodilating medications, and emotional stress. […] UV light: This is postulated to decrease the competence of already dilated cutaneous vasculature, increasing persistent erythema and telangiectasias. […] Demodex: This mite, which is part of the skin’s normal flora, leads to stimulation of the innate immune system. Bacteria in the gut of Demodex may be the inciting factor rather than the Demodex itself. […] S epidermidis: Hyper-reactivity of the innate immune system in rosacea patients makes them sensitive to this normal skin flora. […] H pylori: This is postulated to be strongly correlated with rosacea. This is possibly due to a flush-inducing toxin present in H pylori. […] Positive family history: Some studies have shown a higher rate of positive family history of rosacea in patients with this dermatologic disorder than in skin-healthy controls. […] Smoking: Some studies have shown an increased history of smoking in patients with rosacea as compared with skin-healthy controls.

• #40 Ocular Rosacea – EyeWiki

  https://eyewiki.org/Ocular_Rosacea

  3. Microbial Factors-Demodex folliculorum, a microscopic mite commonly found on the skin, is present in higher densities in rosacea patients. Its interaction with the immune system may induce inflammation. Role of Helicobacter pylori infection has been suggested, as this bacterium produces vasoactive substances that might exacerbate rosacea symptoms. […] 4. Genetic Predisposition-A family history of rosacea increases the likelihood of developing the condition, though specific genetic mutations have not been clearly identified. […] 5. Ultraviolet Radiation-Prolonged UV exposure damages the dermal matrix and worsens inflammation, contributing to persistent erythema and telangiectasia. […] 6. Environmental and Lifestyle Triggers-Extreme temperatures, wind, humidity, and exposure to irritants like skincare products or cosmetics can worsen symptoms. Consumption of alcohol, caffeine, or spicy foods and emotional stress may exacerbate the condition.

• #41 Ocular Rosacea: Symptoms, Causes, Management & Treatment

  https://my.clevelandclinic.org/health/diseases/22265-ocular-rosacea

  Ocular rosacea is a condition that causes inflammation in your eyes and the skin around them. Its a specific type of rosacea a skin disease that causes inflammation and discoloration on your whole face. […] Experts arent sure what causes ocular rosacea. Some possible explanations include: A genetic disorder that youve inherited from one or both biological parents. Bacteria (specifically the same Helicobacter pylori bacteria that cause some gastrointestinal diseases). Environmental irritants (like pollution, exposure to chemicals or toxins). An issue with how blood circulates that makes blood vessels around your eyes swell. […] Even though researchers arent certain what causes ocular rosacea, theyve found some triggers that lead to flare-ups. A trigger is something that causes symptoms to flare up or get worse. Common ocular rosacea triggers include: Exposure to UV light (like sunlight or tanning beds). Stress. Exposure to intense weather (like heat, cold or wind). Drinking alcohol. Eating spicy foods. Doing intense exercise or physical activities.

• #42 Ocular Rosacea – EyeWiki

  https://eyewiki.org/Ocular_Rosacea

  3. Microbial Factors-Demodex folliculorum, a microscopic mite commonly found on the skin, is present in higher densities in rosacea patients. Its interaction with the immune system may induce inflammation. Role of Helicobacter pylori infection has been suggested, as this bacterium produces vasoactive substances that might exacerbate rosacea symptoms. […] 4. Genetic Predisposition-A family history of rosacea increases the likelihood of developing the condition, though specific genetic mutations have not been clearly identified. […] 5. Ultraviolet Radiation-Prolonged UV exposure damages the dermal matrix and worsens inflammation, contributing to persistent erythema and telangiectasia. […] 6. Environmental and Lifestyle Triggers-Extreme temperatures, wind, humidity, and exposure to irritants like skincare products or cosmetics can worsen symptoms. Consumption of alcohol, caffeine, or spicy foods and emotional stress may exacerbate the condition.

• #43 Ocular Rosacea – EyeWiki

  https://eyewiki.org/Ocular_Rosacea

  3. Microbial Factors-Demodex folliculorum, a microscopic mite commonly found on the skin, is present in higher densities in rosacea patients. Its interaction with the immune system may induce inflammation. Role of Helicobacter pylori infection has been suggested, as this bacterium produces vasoactive substances that might exacerbate rosacea symptoms. […] 4. Genetic Predisposition-A family history of rosacea increases the likelihood of developing the condition, though specific genetic mutations have not been clearly identified. […] 5. Ultraviolet Radiation-Prolonged UV exposure damages the dermal matrix and worsens inflammation, contributing to persistent erythema and telangiectasia. […] 6. Environmental and Lifestyle Triggers-Extreme temperatures, wind, humidity, and exposure to irritants like skincare products or cosmetics can worsen symptoms. Consumption of alcohol, caffeine, or spicy foods and emotional stress may exacerbate the condition.

• #44 Ocular Rosacea: Symptoms, Causes, Management & Treatment

  https://my.clevelandclinic.org/health/diseases/22265-ocular-rosacea

  Ocular rosacea is a condition that causes inflammation in your eyes and the skin around them. Its a specific type of rosacea a skin disease that causes inflammation and discoloration on your whole face. […] Experts arent sure what causes ocular rosacea. Some possible explanations include: A genetic disorder that youve inherited from one or both biological parents. Bacteria (specifically the same Helicobacter pylori bacteria that cause some gastrointestinal diseases). Environmental irritants (like pollution, exposure to chemicals or toxins). An issue with how blood circulates that makes blood vessels around your eyes swell. […] Even though researchers arent certain what causes ocular rosacea, theyve found some triggers that lead to flare-ups. A trigger is something that causes symptoms to flare up or get worse. Common ocular rosacea triggers include: Exposure to UV light (like sunlight or tanning beds). Stress. Exposure to intense weather (like heat, cold or wind). Drinking alcohol. Eating spicy foods. Doing intense exercise or physical activities.

• #45 Ocular Rosacea: Symptoms, Causes, Management & Treatment

  https://my.clevelandclinic.org/health/diseases/22265-ocular-rosacea

  Ocular rosacea is a condition that causes inflammation in your eyes and the skin around them. Its a specific type of rosacea a skin disease that causes inflammation and discoloration on your whole face. […] Experts arent sure what causes ocular rosacea. Some possible explanations include: A genetic disorder that youve inherited from one or both biological parents. Bacteria (specifically the same Helicobacter pylori bacteria that cause some gastrointestinal diseases). Environmental irritants (like pollution, exposure to chemicals or toxins). An issue with how blood circulates that makes blood vessels around your eyes swell. […] Even though researchers arent certain what causes ocular rosacea, theyve found some triggers that lead to flare-ups. A trigger is something that causes symptoms to flare up or get worse. Common ocular rosacea triggers include: Exposure to UV light (like sunlight or tanning beds). Stress. Exposure to intense weather (like heat, cold or wind). Drinking alcohol. Eating spicy foods. Doing intense exercise or physical activities.

• #46 Ocular Rosacea – EyeWiki

  https://eyewiki.org/Ocular_Rosacea

  3. Microbial Factors-Demodex folliculorum, a microscopic mite commonly found on the skin, is present in higher densities in rosacea patients. Its interaction with the immune system may induce inflammation. Role of Helicobacter pylori infection has been suggested, as this bacterium produces vasoactive substances that might exacerbate rosacea symptoms. […] 4. Genetic Predisposition-A family history of rosacea increases the likelihood of developing the condition, though specific genetic mutations have not been clearly identified. […] 5. Ultraviolet Radiation-Prolonged UV exposure damages the dermal matrix and worsens inflammation, contributing to persistent erythema and telangiectasia. […] 6. Environmental and Lifestyle Triggers-Extreme temperatures, wind, humidity, and exposure to irritants like skincare products or cosmetics can worsen symptoms. Consumption of alcohol, caffeine, or spicy foods and emotional stress may exacerbate the condition.

• #47 Ocular Rosacea: Symptoms, Causes, Management & Treatment

  https://my.clevelandclinic.org/health/diseases/22265-ocular-rosacea

  Ocular rosacea is a condition that causes inflammation in your eyes and the skin around them. Its a specific type of rosacea a skin disease that causes inflammation and discoloration on your whole face. […] Experts arent sure what causes ocular rosacea. Some possible explanations include: A genetic disorder that youve inherited from one or both biological parents. Bacteria (specifically the same Helicobacter pylori bacteria that cause some gastrointestinal diseases). Environmental irritants (like pollution, exposure to chemicals or toxins). An issue with how blood circulates that makes blood vessels around your eyes swell. […] Even though researchers arent certain what causes ocular rosacea, theyve found some triggers that lead to flare-ups. A trigger is something that causes symptoms to flare up or get worse. Common ocular rosacea triggers include: Exposure to UV light (like sunlight or tanning beds). Stress. Exposure to intense weather (like heat, cold or wind). Drinking alcohol. Eating spicy foods. Doing intense exercise or physical activities.

• #48 Ocular Rosacea: Symptoms, Eye Drops, Triggers, Treatment, and More

  https://www.healthline.com/health/ocular-rosacea

  Ocular rosacea is an inflammatory eye condition that often affects those who have rosacea of the skin. […] Similar to skin rosacea, the direct cause of ocular rosacea is currently unknown. Ocular rosacea may be linked to one or more of the following factors: environmental factors, bacteria, genetics, eyelash mites, blocked eyelid glands. […] There are also things that can cause flare-ups of ocular rosacea. These triggers include: saunas or hot baths, spicy food, hot drinks, caffeine, chocolate, cheese, alcoholic beverages, intense sunlight, wind, or temperature, some emotions (like stress, embarrassment, or anger), certain drugs (examples include cortisone creams and medications that dilate blood vessels), hard exercise.

• #49 Ocular Rosacea: Symptoms, Eye Drops, Triggers, Treatment, and More

  https://www.healthline.com/health/ocular-rosacea

  Ocular rosacea is an inflammatory eye condition that often affects those who have rosacea of the skin. […] Similar to skin rosacea, the direct cause of ocular rosacea is currently unknown. Ocular rosacea may be linked to one or more of the following factors: environmental factors, bacteria, genetics, eyelash mites, blocked eyelid glands. […] There are also things that can cause flare-ups of ocular rosacea. These triggers include: saunas or hot baths, spicy food, hot drinks, caffeine, chocolate, cheese, alcoholic beverages, intense sunlight, wind, or temperature, some emotions (like stress, embarrassment, or anger), certain drugs (examples include cortisone creams and medications that dilate blood vessels), hard exercise.

• #50 Ocular Rosacea and Dry Eye | Cove Eyecare

  https://www.coveeyecare.com/eye-care-services/dry-eye-optometrist/what-causes-dry-eye/ocular-rosacea-and-dry-eye/

  Ocular rosacea is a common inflammatory eye condition that causes redness, itching, and burning sensations around the eyes in many people who have rosacea. […] The exact cause of ocular rosacea is unknown, but researchers have found that 85% of people with the condition have blocked oil glands around the edges of their eyelids. […] Other potential triggers: Bacterial involvement, Blocked glands in the eyelids, Environmental factors, Eyelash mites, Heredity. […] There are also a number of things that can aggravate ocular rosacea, including alcohol consumption, hot baths and saunas, hot or spicy foods and beverages, strenuous exercise, stress, sunlight, wind, and extreme temperatures.

• #51 Ocular Rosacea Clinical Presentation: History, Physical, Causes

  https://emedicine.medscape.com/article/1197341-clinical

  Flushing triggers: These include alcohol, hot beverages, tobacco, spicy foods, vasodilating medications, and emotional stress. […] UV light: This is postulated to decrease the competence of already dilated cutaneous vasculature, increasing persistent erythema and telangiectasias. […] Demodex: This mite, which is part of the skin’s normal flora, leads to stimulation of the innate immune system. Bacteria in the gut of Demodex may be the inciting factor rather than the Demodex itself. […] S epidermidis: Hyper-reactivity of the innate immune system in rosacea patients makes them sensitive to this normal skin flora. […] H pylori: This is postulated to be strongly correlated with rosacea. This is possibly due to a flush-inducing toxin present in H pylori. […] Positive family history: Some studies have shown a higher rate of positive family history of rosacea in patients with this dermatologic disorder than in skin-healthy controls. […] Smoking: Some studies have shown an increased history of smoking in patients with rosacea as compared with skin-healthy controls.

• #52 All About Rosacea: Signs & Symptoms and Treatment | Rosacea.org

  https://www.rosacea.org/patients/all-about-rosacea

  Other recent studies that have found associations between rosacea and increased risk for a growing number of potentially serious systemic diseases, suggesting that rosacea may be an outcome of systemic inflammation. Although causal relationships have not been determined, these have included cardiovascular disease, gastrointestinal disease, neurological and autoimmune diseases and certain cancers.

• #53 Rosacea: Symptoms, Causes, and Management – DermNet

  https://dermnetnz.org/topics/rosacea

  Rosacea has been associated with depression, hypertension, cardiovascular diseases, anxiety disorder, dyslipidemia, diabetes mellitus, migraine, rheumatoid arthritis, Helicobacter pylori infection, ulcerative colitis, and dementia. […] The pathogenesis of rosacea is thought to be multifactorial and includes: Genetic susceptibility, Altered microbiome of the skin and gut, Neurocutaneous mechanisms, Impaired skin barrier. […] Triggers include ultraviolet (UV) radiation, temperature change, exercise, spicy foods, alcohol, psychological stress, air pollution, and tobacco smoking. […] The most significant environmental trigger is UV radiation; affected skin is more sensitive to exposure. […] Ocular rosacea (lid margin telangiectasia, blepharitis, keratitis/conjunctivitis/sclerokeratitis/anterior uveitis).

• #54 Ocular Rosacea: What Your Eyes May Be Trying to Tell You | Rosacea.org

  https://www.rosacea.org/blog/2015/january/ocular-rosacea-what-your-eyes-may-be-trying-to-tell-you

  For many people, eye irritation isnt just a symptom of allergy season or the cold windy air of winter. Its ocular rosacea, a subtype of the disorder that can potentially be very serious if allowed to become severe. […] Found to affect up to 60 percent of rosacea patients in surveys by the National Rosacea Society (NRS), ocular rosacea often results in a watery or bloodshot appearance, irritation and burning or stinging of the eyes. […] A medical study of ocular rosacea patients found that 85 percent had meibomian gland dysfunction. […] Severe ocular rosacea, however, can pose significant consequences if left untreated, including corneal damage and the development of additional blood vessels in the cornea, a condition known as corneal neovascularization. […] Research continues to uncover more information on this rosacea subtype that can lead to better diagnosis.

• #55 What Is Ocular Rosacea & How To Treat It | sk:n clinics

  https://www.sknclinics.co.uk/blog/ocular-rosacea-what-is-it

  Ocular rosacea is the fourth subtype of rosacea that affects the eye area. […] The exact cause of ocular rosacea, as with skin rosacea, is still unknown, though it is thought it may be due to one or more of the following factors: Environmental factors, Bacteria, Blocked eyelid glands, Eyelash mites, Genetics. […] Your environment or habits can also trigger a flare-up of ocular rosacea; these include: Hot or spicy foods, Alcohol and caffeine, Dairy products, Temperature extremes, Aerobic or strenuous exercise, Saunas or hot baths, Emotions such as stress. […] If left untreated, ocular rosacea can affect the cornea of the eyeball, causing the cornea to become inflamed and damaged. This may lead to infections that could threaten eyesight.

• #56 Seeing Red: Ocular Rosacea Symptoms, Images, Treatments, and Dry Eye Disease

  https://imedpharma.com/blog/seeing-red-ocular-rosacea-dry-eye-disease/

  Rosacea is a skin disease that primarily affects the central facial skin such as the cheeks, chin, nose, and central forehead, but can also affect the eyes, which is called ocular rosacea. Scientific reviews report approximately 58 to 72% of rosacea patients experience ocular symptoms,[1],[2] about one-third of patients develop potentially sight-threatening corneal involvement,[1] and that this under-appreciated condition can cause permanent blindness if inadequately treated.[3] […] Ocular rosacea causes inflammation of the eyelids and ocular surface which can also affect the Meibomian glands, leading to dry eye disease.[2] If left untreated, ocular rosacea can cause visual impairment through severe dry eye and corneal ulcers and scarring.[4] […] While the precise cause of rosacea is not known, it is important to see an eye care professional for diagnosis and to start treatment to prevent worsening of symptoms and damage to the ocular surface to avoid severe damage and even permanent blindness.

• #57 Rosacea – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK557574/

  The exact etiology of rosacea is not fully understood. Genetics, immune reaction, microorganisms, environmental factors, and neurovascular dysregulation are among the known etiological factors for the development of rosacea. […] A genetic predisposition is supported by a higher incidence of disease in patients with a family history of rosacea. Furthermore, specific human leucocyte antigen (HLA) loci have been identified in patients with rosacea. […] Among microorganisms, Demodex mites appear to play a role in rosacea as they are seen in higher numbers on rosacea-affected skin, though it is not clear if this is a cause or consequence of rosacea. Helicobacter pylori is another organism with reported association with rosacea.

• #58 Ocular Rosacea – EyeWiki

  https://eyewiki.org/Ocular_Rosacea

  3. Microbial Factors-Demodex folliculorum, a microscopic mite commonly found on the skin, is present in higher densities in rosacea patients. Its interaction with the immune system may induce inflammation. Role of Helicobacter pylori infection has been suggested, as this bacterium produces vasoactive substances that might exacerbate rosacea symptoms. […] 4. Genetic Predisposition-A family history of rosacea increases the likelihood of developing the condition, though specific genetic mutations have not been clearly identified. […] 5. Ultraviolet Radiation-Prolonged UV exposure damages the dermal matrix and worsens inflammation, contributing to persistent erythema and telangiectasia. […] 6. Environmental and Lifestyle Triggers-Extreme temperatures, wind, humidity, and exposure to irritants like skincare products or cosmetics can worsen symptoms. Consumption of alcohol, caffeine, or spicy foods and emotional stress may exacerbate the condition.

• #59 Ocular Rosacea – EyeWiki

  https://eyewiki.org/Ocular_Rosacea

  Acne rosacea, commonly known simply as rosacea, is a chronic inflammatory skin condition that primarily affects the central face. Its exact cause remains unclear, but it is believed to result from a combination of genetic, environmental, and immune-related factors. The following are the main etiologies associated with acne rosacea: […] […] 1. Vascular Dysregulation-Abnormalities in the cutaneous blood vessels can lead to flushing, persistent redness, and the development of telangiectasia (visible blood vessels). Triggers such as heat, alcohol, spicy foods, and emotional stress exacerbate vasodilation. […] 2. Immune Dysfunction-Overactivity of the innate immune system, particularly elevated levels of antimicrobial peptides like cathelicidins, leads to chronic inflammation and skin barrier dysfunction. Dysregulation of inflammatory pathways can contribute to skin hypersensitivity.

• #60 Ocular Rosacea – EyeWiki

  https://eyewiki.org/Ocular_Rosacea

  7. Neurovascular Dysregulation-Dysregulation of nerve function in the skin can amplify flushing, burning, and stinging sensations seen in rosacea patients. Understanding these etiological factors is crucial for tailoring effective treatment strategies and advising patients on lifestyle modifications to minimize triggers.

• #61 Ocular Rosacea – EyeWiki

  https://eyewiki.org/Ocular_Rosacea

  Acne rosacea, commonly known simply as rosacea, is a chronic inflammatory skin condition that primarily affects the central face. Its exact cause remains unclear, but it is believed to result from a combination of genetic, environmental, and immune-related factors. The following are the main etiologies associated with acne rosacea: […] […] 1. Vascular Dysregulation-Abnormalities in the cutaneous blood vessels can lead to flushing, persistent redness, and the development of telangiectasia (visible blood vessels). Triggers such as heat, alcohol, spicy foods, and emotional stress exacerbate vasodilation. […] 2. Immune Dysfunction-Overactivity of the innate immune system, particularly elevated levels of antimicrobial peptides like cathelicidins, leads to chronic inflammation and skin barrier dysfunction. Dysregulation of inflammatory pathways can contribute to skin hypersensitivity.

• #62 Cutaneous and ocular rosacea: Common and specific physiopathogenic mechanisms and study models

  https://pmc.ncbi.nlm.nih.gov/articles/PMC8131178/

  Overall, all these phenomena in the skin and eye act in synergy to maintain chronic inflammation at the cutaneous, epidermal, conjunctival, and perivascular interface, eventually leading to secondary fibrosis. […] The infiltration of mast cells and the release of proinflammatory mediators, such as interleukin-1 (IL-1), IL-6, IL-17, interferon- (IFN-), matrix metalloproteinase-2 (MMP-2), MMP-9, tumor necrosis factor- (TNF-), activated by nuclear factor-B (NF-B), contribute to the inflammatory signs. […] In the eyelid biopsies of patients with ocular rosacea, TLR-4 expression was significantly increased compared with normal subjects. […] In tears, rosacea patients have increased levels of IL-1, IL-1, IL-16, TNF-, monocyte chemoattractant protein-1 (MCP-1), MMP-8, and MMP-9. […] The link between LL-37 and rosacea was demonstrated by Yamasaki et al. in an inflammatory skin mouse model induced by the injection of LL-37, developing telangiectasia, erythema, and inflammation.

• #63 Ocular rosacea

  https://dermnetnz.org/topics/ocular-rosacea

  Ocular rosacea is a form of rosacea that involves the eyelids and the front of the eye. […] The exact cause of ocular rosacea is unknown. However, immunological factors, micro-organisms on the skin surface, and reactive blood vessels are involved. […] Demodex mites, normal inhabitants of eyelash follicles, may stimulate inflammation in ocular rosacea and anterior blepharitis. […] Bacteria may play a role, as ocular rosacea improves with antibiotics. One theory is that bacterial lipases release toxic free fatty acids and glycerides from lipids secreted by meibominan glands. […] The pro-inflammatory cytokine interleukin 1-alpha (IL-1) increases metallomatrix protein-9 (MMP-9) in the tear fluid. Upregulation of MMP-9 damages ocular tissues.

• #64 Ocular Rosacea: Background, Pathophysiology, Epidemiology

  https://emedicine.medscape.com/article/1197341-overview

  Rosacea is a common inflammatory dermatologic condition that affects the midface and eyes. Although the etiology of rosacea is not fully understood, an augmented response of the innate immune system and neurovascular pathways to certain triggers are considered to be major factors in the chronic inflammatory process associated with this condition. […] More than 50% of patients with rosacea have ocular manifestations, and ocular findings may be the first manifestation of rosacea in some patients. […] A variety of rosacea triggers have been described including skin colonization with Demodex mites (along with bacteria in their gut) and Staphylococcus epidermidis. […] Eradication of Helicobacter pylori has been shown to improve rosacea in some patients, and the organism may play a role in the pathogenesis of inflammation in rosacea. […] Four distinct rosacea subtypes have been described: erythematotelangiectatic rosacea, papulopustular rosacea, phymatous rosacea, and ocular rosacea.

• #65 Cutaneous and ocular rosacea: Common and specific physiopathogenic mechanisms and study models

  https://pmc.ncbi.nlm.nih.gov/articles/PMC8131178/

  Rosacea is a multifactorial disease triggered by favoring factors, the pathogenesis of which remains imperfectly understood. […] The ocular variant of rosacea represents between 10% and 50% of the total rosacea population and is characterized by inflammation of the ocular surface tissues, including the eyelid edge (blepharitis) and eyes (tear film instability, eye irritation, red eyes, eye dryness, conjunctivitis, etc.). […] The mechanisms of rosacea are still unclear. In recent years, a multifactorial pathogenesis with genetic predisposition has been emphasized. […] The molecular steps involved in the pathogenesis of ocular rosacea are not fully known. Meibomian gland dysfunction has been recognized as a major component. […] A link between Demodex infestation and ocular rosacea has also been advocated.

• #66 What Is Ocular Rosacea?

  https://www.webmd.com/eye-health/what-is-ocular-rosacea

  Scientists dont know exactly why it happens, but researchers have found that 85% of people with ocular rosacea have blocked oil glands around the edges of their eyelids. […] Some scientists believe mites — tiny spider-like creatures that live in hair follicles on your face and lashes — can block the glands. […] Others think there may be a link between rosacea and the bacteria that cause digestive infections. […] Another idea is that rosacea is caused by a problem with your blood vessels. […] Genes and your environment may play a part, too.

• #67 Ocular Rosacea – EyeWiki

  https://eyewiki.org/Ocular_Rosacea

  3. Microbial Factors-Demodex folliculorum, a microscopic mite commonly found on the skin, is present in higher densities in rosacea patients. Its interaction with the immune system may induce inflammation. Role of Helicobacter pylori infection has been suggested, as this bacterium produces vasoactive substances that might exacerbate rosacea symptoms. […] 4. Genetic Predisposition-A family history of rosacea increases the likelihood of developing the condition, though specific genetic mutations have not been clearly identified. […] 5. Ultraviolet Radiation-Prolonged UV exposure damages the dermal matrix and worsens inflammation, contributing to persistent erythema and telangiectasia. […] 6. Environmental and Lifestyle Triggers-Extreme temperatures, wind, humidity, and exposure to irritants like skincare products or cosmetics can worsen symptoms. Consumption of alcohol, caffeine, or spicy foods and emotional stress may exacerbate the condition.

• #68 Ocular Rosacea: Symptoms, Causes, Management & Treatment

  https://my.clevelandclinic.org/health/diseases/22265-ocular-rosacea

  Ocular rosacea is a condition that causes inflammation in your eyes and the skin around them. Its a specific type of rosacea a skin disease that causes inflammation and discoloration on your whole face. […] Experts arent sure what causes ocular rosacea. Some possible explanations include: A genetic disorder that youve inherited from one or both biological parents. Bacteria (specifically the same Helicobacter pylori bacteria that cause some gastrointestinal diseases). Environmental irritants (like pollution, exposure to chemicals or toxins). An issue with how blood circulates that makes blood vessels around your eyes swell. […] Even though researchers arent certain what causes ocular rosacea, theyve found some triggers that lead to flare-ups. A trigger is something that causes symptoms to flare up or get worse. Common ocular rosacea triggers include: Exposure to UV light (like sunlight or tanning beds). Stress. Exposure to intense weather (like heat, cold or wind). Drinking alcohol. Eating spicy foods. Doing intense exercise or physical activities.

• #69 Ocular Rosacea: What Your Eyes May Be Trying to Tell You | Rosacea.org

  https://www.rosacea.org/blog/2015/january/ocular-rosacea-what-your-eyes-may-be-trying-to-tell-you

  For many people, eye irritation isnt just a symptom of allergy season or the cold windy air of winter. Its ocular rosacea, a subtype of the disorder that can potentially be very serious if allowed to become severe. […] Found to affect up to 60 percent of rosacea patients in surveys by the National Rosacea Society (NRS), ocular rosacea often results in a watery or bloodshot appearance, irritation and burning or stinging of the eyes. […] A medical study of ocular rosacea patients found that 85 percent had meibomian gland dysfunction. […] Severe ocular rosacea, however, can pose significant consequences if left untreated, including corneal damage and the development of additional blood vessels in the cornea, a condition known as corneal neovascularization. […] Research continues to uncover more information on this rosacea subtype that can lead to better diagnosis.

• #70 Cutaneous and ocular rosacea: Common and specific physiopathogenic mechanisms and study models

  https://pmc.ncbi.nlm.nih.gov/articles/PMC8131178/

  Overall, all these phenomena in the skin and eye act in synergy to maintain chronic inflammation at the cutaneous, epidermal, conjunctival, and perivascular interface, eventually leading to secondary fibrosis. […] The infiltration of mast cells and the release of proinflammatory mediators, such as interleukin-1 (IL-1), IL-6, IL-17, interferon- (IFN-), matrix metalloproteinase-2 (MMP-2), MMP-9, tumor necrosis factor- (TNF-), activated by nuclear factor-B (NF-B), contribute to the inflammatory signs. […] In the eyelid biopsies of patients with ocular rosacea, TLR-4 expression was significantly increased compared with normal subjects. […] In tears, rosacea patients have increased levels of IL-1, IL-1, IL-16, TNF-, monocyte chemoattractant protein-1 (MCP-1), MMP-8, and MMP-9. […] The link between LL-37 and rosacea was demonstrated by Yamasaki et al. in an inflammatory skin mouse model induced by the injection of LL-37, developing telangiectasia, erythema, and inflammation.

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