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• #1 Acanthosis nigricans – Symptoms & causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/acanthosis-nigricans/symptoms-causes/syc-20368983

  Acanthosis nigricans is a condition that causes areas of dark, thick velvety skin in body folds and creases. It typically affects the armpits, groin and neck. […] The main sign of acanthosis nigricans is dark, thick, velvety skin in body folds and creases. It often appears in the armpits, groin and back of the neck. It develops slowly. The affected skin might be itchy, have an odor and develop skin tags.

• #1 Acanthosis nigricans: Appearance, causes, and treatment

  https://www.medicalnewstoday.com/articles/324062

  In acanthosis nigricans, the skin becomes thick and velvety. It may appear gray, brown, or black, and often appears in skin folds. Acanthosis nigricans often develops around the neck, groin, and armpits. There may also be itchiness. The main symptoms of acanthosis nigricans are hyperpigmentation and hyperkeratosis. A person may notice changes in the color and texture of their skin. The color may become gray, black, or brown. The texture may become velvety. In some cases, these areas may progress and develop plaques, or raised and hardened areas of skin. A person may also experience dryness, itchiness, and skin tags. These changes usually take months or years to appear. Occasionally, they are present from birth. If they develop rapidly, this could be a sign of cancer. Acanthosis nigricans can occur anywhere on the body, but commonly affects the armpits, neck folds, genitals, groin, under the breasts, anus, knees, knuckles, elbows, belly button, palms of the hands, and soles of the feet. Less commonly, acanthosis nigricans may appear on the nipples, mucous membranes, including those in the mouth, nose, and throat, and part of the eye and eyelids.

• #1 Acanthosis Nigricans: Treatment, Pictures, and Causes

  https://www.healthline.com/health/acanthosis-nigricans

  Acanthosis nigricans often causes patches on skin folds. It typically occurs in people with prediabetes or diabetes but may occur with other medical conditions. Acanthosis nigricans is a fairly common skin pigmentation disorder. Dark patches of skin with a thick, velvety texture characterize the condition. The affected areas of your skin may also itch or have an odor. Acanthosis nigricans may be a sign of a more serious health problem, such as prediabetes. The most effective treatments focus on finding and resolving medical conditions at the root of the problem. […] These skin patches tend to disappear after successfully treating the root condition. Acanthosis nigricans isn’t a disease. It’s a symptom of another condition like diabetes and an indicator that you may need to seek medical attention.

• #1 Acanthosis Nigricans Symptoms Clear Skin Clinic

  https://www.clearskin.london/skin-conditions/acanthosis-nigricans/symptoms/

  The following are the main symptoms of Acanthosis Nigricans: […] Hyperkeratosis: this refers to thickened, velvety areas of skin in body creases and folds. […] Hyperpigmentation: this refers to more pigmented and darkened areas of skin that can become black, brown, or greyish in colour. […] Other minor symptoms of Acanthosis Nigricans includes: Abnormal itchiness, Dryness in the area of skin, Unusual odour, Roughness of the skin, Skin tags. […] Unilateral Acanthosis Nigricans is when a person experiences these skin condition on only one side of their body. […] In some uncommon cases, a patch can develop on the eyelids, lips, mouth, or nipples. Usually, the symptoms of Acanthosis Nigricans emerge slowly and gradually, sometimes taking as long as months or years to fully manifest. […] Changes caused by Acanthosis Nigricans usually develop gradually.

• #1 Acanthosis Nigricans: Causes, Symptoms, Diagnosis & Treatment

  https://www.webmd.com/skin-problems-and-treatments/acanthosis-nigricans-overview

  Acanthosis nigricans is a skin condition that results in thick, velvety, light-brown-to-black patches that often appear in the skin folds in the front or back of your neck, armpit, elbows, knees, belly button, or under your breast. It shows up slowly, usually taking months to a year. If you see these patches develop suddenly, see a doctor immediately, as it could be a sign of cancer. […] One main sign of acanthosis nigricans is the thick, velvety, light-brown-to-black patch that often appears in the skin folds in the front or back of your neck, armpit, elbows, knees, belly button, or under your breast. […] Acanthosis nigricans might also feel itchy and smell, but it doesn’t cause pain. […] This skin condition shows up slowly, taking months to a year. If you suddenly see them on you, see a doctor or dermatologist immediately, as it could be a sign of cancer.

• #1 Understanding Acanthosis Nigricans | Saint Luke’s Health System

  https://www.saintlukeskc.org/health-library/understanding-acanthosis-nigricans

  Acanthosis nigricans is a skin condition. It causes dark, thick patches on the skin. These patches often occur in the folds or creases of the skin, such as on the neck. This skin condition can flare up anywhere on the body but most often is found on the neck, armpits, groin, elbows, and back of the knees. The skin may look dirty and dry at first. It then thickens and darkens. The patches are velvety in texture. They may range in color from brown to black. Thick areas may become moist and have an odor. […] Many cases occur in people who have type 2 diabetes or who are obese and at high risk of developing type 2 diabetes. […] In rare cases, it has been linked to some cancers, such as melanoma, liver, colon, and stomach. Some medicines may also cause it. These include birth control pills, niacin, and strong corticosteroids such as prednisone. This condition may also be related to hormone disorders.

• #1 Acanthosis Nigricans: Background, Pathophysiology, Etiology

  https://emedicine.medscape.com/article/1102488-overview

  Acanthosis nigricans (AN) is characterized by an asymptomatic area of darkening and thickening of the skin, occasionally with pruritus; lesions begin as hyperpigmented macules and patches and progress to symmetric, hyperpigmented, and velvety plaques with ill-defined borders, typically involving intertriginous areas. […] Patients with benign AN experience very few, if any, complications of their skin lesions. However, many of these patients have an underlying insulin-resistant state that is the cause of their acanthosis nigricans. The severity of the insulin resistance is highly variable and ranges from an incidental finding after routine blood studies to overt diabetes mellitus. The severity of skin findings may parallel the degree of insulin resistance, and a partial resolution may occur with treatment of the insulin-resistant state.

• #1 Acanthosis Nigricans – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK431057/

  Patients with the benign form of acanthosis nigricans have few or no skin complications, good prognosis, and potential for resolution with treatment. Complications can stem from underlying diseases like diabetes and insulin resistance. Prognosis in patients with the malignant form of acanthosis nigricans is poor as the malignancy is advanced usually at the time of diagnosis in these patients.

• #1 Acanthosis Nigricans: Causes, Diagnosis, and Treatment

  https://dermnetnz.org/topics/acanthosis-nigricans

  Acanthosis nigricans may be a vital marker of underlying conditions which themselves carry significant risk to overall morbidity and mortality, such as obesity, metabolic syndrome, diabetes, and even serious internal malignancies. […] If the underlying etiology can be addressed, such as through weight loss interventions, then the acanthosis nigricans is expected to improve or fully resolve. Malignant acanthosis nigricans, however, is associated with a poor prognosis, with an average survival time of two years from diagnosis of the AN due to mortality from advanced underlying malignancy.

• #1 Acanthosis nigricans: Appearance, causes, and treatment

  https://www.medicalnewstoday.com/articles/324062

  If acanthosis nigricans is a result of genetics, the patches may grow slowly then stop or reduce in size without treatment. However, if an underlying condition is the cause, the changes will remain. Treating the cause may improve the symptoms. […] Acanthosis nigricans often occurs in those with PCOS. This condition causes an imbalance in reproductive hormones, affecting both the reproductive system and a person’s metabolism. People with PCOS can develop insulin resistance, and may have difficulty maintaining a moderate weight. Either factor may increase the likelihood of getting acanthosis nigricans.

• #1

  https://www.kuh.ku.edu.tr/mayo-clinic-care-network/mayo-clinic-health-information-library/diseases-conditions/acanthosis-nigricans

  Acanthosis nigricans is a condition that causes areas of dark, thick velvety skin in body folds and creases. It typically affects the armpits, groin and neck. […] The main sign of acanthosis nigricans is dark, thick, velvety skin in body folds and creases. It often appears in the armpits, groin and back of the neck. It develops slowly. The affected skin might be itchy, have an odor and develop skin tags. […] People who have acanthosis nigricans are much more likely to develop type 2 diabetes.

• #1 Acanthosis Nigricans: Treatment, Pictures, and Causes

  https://www.healthline.com/health/acanthosis-nigricans

  Acanthosis nigricans can cause brown, crusty patches under the breasts. These patches are characterized by their dark color and velvety texture. They may also be itchy or have an odor. […] If the condition occurs due to medications or supplements, your doctor may suggest that you discontinue them or recommend substitutes. The discolored skin patches will usually fade when you find the cause and get it under control. Acanthosis nigricans isn’t a standalone condition, so its possible complications depend on the underlying cause. […] It often develops slowly over months or even years. Sudden or rapid onset of acanthosis nigricans may be a sign of cancer. It’s important to seek consultation with a dermatologist to investigate the patch further if it has developed. The presence of acanthosis nigricans is a strong predictor of future diabetes.

• #1 Acanthosis nigricans: To be or not to be afraid

  https://pmc.ncbi.nlm.nih.gov/articles/PMC6444334/

  Although less frequent than the obesity and insulin resistance-associated forms, the malignant AN is a particularly important type, as it is a sign of an underlying malignancy. It actually represents a paraneoplastic syndrome, in ~17% of cases appearing prior to the tumor diagnosis and occasioning extensive clinical and paraclinical investigations that lead to the diagnosis. […] Compared to other types of AN, the malignant form appears more abruptly, the lesions are more widespread or in non-typical areas, progress more rapidly, are frequently pruritic and are often extended to the mucosa, especially the oral cavity. […] The evolution of paraneoplastic AN is tightly connected to the evolution of cancer, regressing after the surgical ablation of the tumor or in some cytostatic treatments; it could even be a valuable parameter for monitoring of therapy, since it reactivates in case of tumor relapse or development of metastases.

• #1 Acanthosis nigricans

  https://www.pcds.org.uk/clinical-guidance/acanthosis-nigricans

  Acanthosis nigricans (AN) is characterised by hyperpigmentation and a velvety thickening of skin predominantly affecting the neck and flexures. […] The skin changes of AN tend to be asymptomatic, except in malignant AN. […] Malignant AN tends to develop in middle-aged and elderly patients, and is more abrupt in presentation. […] Lesions arise more suddenly, are more extensive and severe. […] The vast majority of cases of malignant AN are secondary to adenocarcinoma of the stomach, but other malignancies sometimes found include other GI tract tumours, lung, uterus, ovaries, and urinary tract. […] Additional features that should increase the level of suspicion are: Tripe palms, which denotes velvety, rugose thickening of the palms, and is nearly always associated with internal malignancy, usually the stomach or lungs.

• #1 Acanthosis Nigricans – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK431057/

  Patients usually present with an asymptomatic area of darkening and thickening of the skin, pruritus, and lesions that are velvety, hyperpigmented macules and patches and progress to palpable plaques. In approximately one-third of cases, malignant acanthosis nigricans presents with skin changes before any signs of cancer. In another one-third of cases, lesions arise simultaneously with the neoplasm. In the remaining one-third of cases, the skin findings manifest sometime after the diagnosis of cancer. […] In nearly one-third of patients with malignant acanthosis nigricans, the skin changes usually occur before any clinical signs of the malignancy. In another one-third of patients, the skin lesions develop at the same time as the presentation of cancer. In the remaining patients, the skin features occur after cancer has developed. Malignant acanthosis nigricans can appear suddenly and often is associated with intense pruritus.

• #1 Acanthosis Nigricans: Causes, Diagnosis &Treatment

  https://my.clevelandclinic.org/health/diseases/12168-acanthosis-nigricans

  Light brown or black skin patches may be a sign of acanthosis nigricans. This treatable skin disorder isn’t contagious or dangerous. However, it can be a sign of diabetes, so talk to your healthcare provider. Often, treating diabetes (or another underlying cause) causes the skin to clear up. […] AN symptoms tend to develop slowly. If symptoms develop quickly, it may be a sign of cancer, though this is rare. […] Symptoms tend to appear slowly, over months or even years. If these signs appear suddenly, see a dermatologist. It may be a sign of cancer. […] AN will not go away on its own, but you dont always need medical treatment. If no underlying condition is causing AN, you can decide if you want to treat the dark patches. […] People typically see good results after treatment. The skin clears, although the dark spots may not go away completely.

• #1 Acanthosis nigricans – Diagnosis & treatment – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/acanthosis-nigricans/diagnosis-treatment/drc-20368987

  Acanthosis nigricans can be detected during a skin exam. […] There’s no specific treatment for acanthosis nigricans. […] If your acanthosis nigricans is caused by obesity, nutritional counseling and losing weight may help. […] If your condition seems to be related to a medication or supplement that you use, your care provider may suggest that you stop using that substance. […] If acanthosis nigricans was triggered by a cancerous tumor, surgery to remove the tumor often clears up the skin symptoms.

• #1 Acanthosis nigricans: Foothill Dermatology Medical Center: Dermatology

  https://www.foothillderm.com/blog/acanthosis-nigricans

  If you have AN, it is essential to find out whether another disease is causing it. Finding and treating an undiagnosed disease may clear (or partially clear) your skin. If a disease is not causing your AN or you do not see the results you want from treating a related disease, a dermatologist can treat your skin. […] Studies show that many obese people see the dark patches on their skin clear when they lose a significant amount of weight.

• #1 Acanthosis Nigricans | Causes, Symptoms, & Treatment Guide

  https://fitwellhub.pk/acanthosis-nigricans/

  The severity and appearance of acanthosis nigricans can improve with successful weight loss in people with insulin resistance and obesity. The velvety and dark patches associated may start to fade or disappear as weight is reduced. When an individual loses excess weight and improves insulin sensitivity, the symptoms may diminish or resolve entirely.

• #1 Acanthosis Nigricans Treatment in Delhi, India | Symptoms & Causes

  https://www.blkmaxhospital.com/our-specialities/dermatology/conditions-treatments/acanthosis-nigricans

  If any changes are noticed in one’s skin, it is important to consult a doctor for an accurate diagnosis. […] Acanthosis nigricans is often seen in individuals with insulin resistance, a condition commonly associated with type 2 diabetes. […] The dark patches of skin may appear in areas such as the neck, armpits, and groin, which are typically areas prone to friction and sweating. […] If one has acanthosis nigricans, it is important to monitor the blood sugar levels and consult with his/her doctor for appropriate management. […] The visible changes in the skin can have a significant impact on an individual’s self-esteem and overall psychological well-being. […] Darkened patches of skin can be particularly noticeable on lighter skin tones, leading to feelings of self-consciousness and embarrassment.

• #1 Acanthosis Nigricans Treatment: Diagnosis, Causes & Symptoms

  https://www.olivaclinic.com/blog/acanthosis-nigricans-treatment/

  Acanthosis nigricans occurs most commonly in skin folds due to high friction. It appears earliest in the underarm area and back of the neck (nape), but can also occur on groin folds, below breasts in females, elbows, knuckles, knees, face and rarely in other body areas like palms, soles or navel. […] In most cases, acanthosis nigricans does not go away without treatment. Treating the skin symptoms is not sufficient; your medical practitioner needs to address the underlying causes, like insulin resistance, to treat this type of pigmentation. […] If you see dark velvety patches appearing suddenly on your neck, underarms, skin folds or other body areas, you should visit a dermatologist immediately. […] Acanthosis nigricans does not go away on its own. Treating the symptoms and the underlying cause can minimise it.

• #1 Acanthosis Nigricans: Symptoms, Causes & Treatment

  https://tap.health/acanthosis-nigricans-treatment/

  Acanthosis nigricans (AN) is a skin condition characterized by dark, velvety patches, often appearing in skin folds like the neck, armpits, and groin. […] AN manifests as thickened, dark brown or black skin patches. These patches can be itchy or have a velvety texture. […] The most noticeable symptom is the darkening of the skin. This discoloration can range from light brown to dark brown or even black. […] While AN itself isn’t life-threatening, it’s often associated with insulin resistance and conditions like prediabetes and type 2 diabetes. […] Early diagnosis and management are vital in preventing serious complications. […] The appearance of AN should not be ignored, as it can be a warning sign of insulin resistance, a precursor to type 2 diabetes. […] If you notice dark, velvety patches on your skin, especially if you have a family history of diabetes or are experiencing other symptoms like increased thirst or frequent urination, it’s crucial to consult a doctor. […] Early diagnosis and appropriate treatment are vital, particularly in high-risk populations prevalent in India and tropical countries.

• #1 Acanthosis Nigricans (for Teens) | Nemours KidsHealth

  https://kidshealth.org/en/teens/acanthosis.html

  Acanthosis nigricans appears gradually with dark, velvety patches of skin in body creases and folds, usually in the neck, armpits, or groin. […] It can cause mild itching, but this is uncommon. […] Treating the underlying cause of acanthosis nigricans can make the dark patches of skin fade or even disappear. […] Losing weight will help acanthosis nigricans fade.

• #1 Acanthosis Nigricans | Rady Children’s Hospital

  https://www.rchsd.org/health-article/acanthosis-nigricans/

  Acanthosis nigricans appears gradually with dark, velvety patches of skin in body creases and folds, usually in the neck, armpits, or groin. […] It can be found on other parts of the body, including the face, chest, elbows, knees, and knuckles. […] Children may have mild itching, but this is uncommon.

• #1 Acanthosis Nigricans (AN) | Nationwide Children’s Hospital

  https://www.nationwidechildrens.org/conditions/acanthosis-nigricans

  Acanthosis nigricans is a skin condition characterized by dark, thick, velvety patches of skin in body folds and creases. […] This dark patch is called acanthosis nigricans (AAY-can-THO-sis NIG-ruh-cans), or AN. It is usually a sign that your body is making extra insulin that it cannot use well. So the insulin builds up, and as a result, you may get a dark area of skin. We call this insulin resistance. Insulin resistance is a step towards developing type 2 diabetes. […] AN can be embarrassing. Some people call it „dirty neck” and try scrubbing it or even using bleach to get rid of it. These don’t work, though, so spare yourself the bleaching. […] The good news is that taking control over your weight — learning to eat well, being active and losing some weight — lowers the amount of unused insulin in your body. This will help get rid of AN.

• #1 Acanthosis Nigricans: Appearance, Causes, and Treatment

  https://resources.healthgrades.com/right-care/skin-hair-and-nails/acanthosis-nigricans

  Acanthosis nigricans is a skin condition that can present as hyperpigmented patches of skin. It may be a symptom of a further underlying condition. Conditions that may lead to acanthosis nigricans include diabetes, insulin resistance, medication reactions, and, in rare cases, cancer. […] Acanthosis nigricans generally appears as darkened, thickened areas or velvety patches on the skin. The affected skin can also present as symmetrical. They may not have clearly defined borders or areas where the discoloration begins. […] Acanthosis nigricans is commonly an indication of insulin resistance or diabetes. A high level of insulin in the blood may affect the way that the skin cells grow. This can trigger the formation of acanthosis nigricans. […] Acanthosis nigricans can occur due to genetic mutations that a person inherits and has present at birth. Symptoms may present during childhood. […] This condition may progress until puberty, when it can stabilize or diminish.

• #1 Crouzon syndrome with acanthosis nigricans: MedlinePlus GeneticsLock

  https://medlineplus.gov/genetics/condition/crouzon-syndrome-with-acanthosis-nigricans/

  Crouzon syndrome with acanthosis nigricans is a disorder characterized by the premature joining of certain bones of the skull (craniosynostosis) during development and a skin condition called acanthosis nigricans. […] Acanthosis nigricans is a skin condition characterized by thick, dark, velvety skin in body folds and creases, including the neck and underarms. […] People with Crouzon syndrome with acanthosis nigricans may also have other skin abnormalities; for example, scars in the thick, dark areas of skin are flat and pale. […] Additionally, in some people with the condition, one or both nasal passages are narrowed (choanal stenosis) or completely blocked (choanal atresia), which can cause difficulty breathing. A buildup of fluid in the brain (hydrocephalus) can also occur. Nasal passage abnormalities and hydrocephalus are rare in Crouzon syndrome. […] Less common features of Crouzon syndrome with acanthosis nigricans include subtle changes in the bones of the spine (vertebrae), abnormalities of the finger bones, and noncancerous growths in the jaw called cementomas.

• #1 Acanthosis nigricans

  https://www.nhs.uk/conditions/acanthosis-nigricans/

  Acanthosis nigricans is the name for dry, dark patches of skin that usually appear in the armpits, neck or groin. It could be a sign of an underlying condition, so it needs to be checked by a GP. […] The main symptom of acanthosis nigricans is patches of skin that are darker and thicker than usual. […] The patches often appear gradually without any other symptoms. […] Sometimes the skin may be itchy. […] Although acanthosis nigricans is usually harmless, it’s best to get any skin changes checked out. […] Rarely, it can be a sign of something more serious, such as cancer. […] The patches should fade over time once the cause is treated.

• #1 Acanthosis Nigricans Condition, Treatments and Pictures for Adults – Skinsight

  https://skinsight.com/skin-conditions/acanthosis-nigricans/

  If you develop sudden or widespread acanthosis nigricans (involving the skin folds as well as the palms of the hands, the lips, and other less typical areas) or if you have acanthosis nigricans and are losing weight without trying, you should see your medical professional promptly to make sure here is no underlying serious medical condition, such as malignancy.

• #1 Acanthosis Nigricans Causes Symptoms And TreatmentsFacebookPinterestTwitterYouTube

  https://www.diabetescarecommunity.ca/living-well-with-diabetes-articles/acanthosis-nigricans-causes-symptoms-and-treatments/

  Acanthosis nigricans is a condition in which tan- or brown-coloured patches appear on the skin. These patches are usually found in areas with skin folds, such as the neck, armpit and groin, and sometimes the elbows and knees. They are often described as having a thick and ‘velvety’ texture, and may be quite itchy. […] Acanthosis nigricans usually occurs in people who are very overweight. It is also a very common symptom of diabetes, especially in those who are overweight or obese and have poorly controlled blood sugar. […] Acanthosis nigricans is easy to recognize by sight, as the dark, velvety patches of skin are very distinctive. The condition can be diagnosed by healthcare professionals through a physical examination, medical history and blood tests. […] While acanthosis nigricans may not go away completely, the patches may lighten and shrink if you manage your diabetes effectively and lose weight, if needed.

• #1 Acanthosis Nigricans: Causes, Diagnosis &Treatment

  https://my.clevelandclinic.org/health/diseases/12168-acanthosis-nigricans

  Treatment for AN depends on the cause. If AN is due to an underlying condition, such as diabetes or a hormonal condition, treating the condition will treat the skin problems. […] AN isn’t dangerous or harmful. People can live normal, healthy lives with AN. […] However, its important to manage conditions that may be causing AN, such as diabetes, obesity or hormonal conditions. And if the dark patches appear suddenly, see your healthcare provider immediately. The sudden appearance may be a sign of cancer. […] Acanthosis nigricans can be a sign of prediabetes or diabetes.

• #2 Acanthosis Nigricans – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK431057/

  Acanthosis nigricans is a cutaneous manifestation of an underlying condition. It usually develops in skin folds, such as the back of the neck, axilla, and groin, where it presents as velvety hyper-pigmented patches with poorly defined borders. Acanthosis nigricans is most commonly associated with diabetes and insulin resistance, but rarely it can be a sign of internal malignancy. It can also occur with hormone disorders or with the use of certain medications like systemic glucocorticoids and oral contraceptives. […] Acanthosis nigricans is a velvety, darkening of the skin that usually occurs in intertriginous areas. This hyperpigmentation has poorly defined borders, usually occurs in skin fold areas, such as the back of the neck, axilla, and groin, and may include thickening of the skin. Acanthosis nigricans is most commonly associated with diabetes and insulin resistance, but rarely it can be a sign of internal malignancy. It can also occur with hormone disorders and with the use of certain medications like systemic glucocorticoids and oral contraceptives.

• #2 Acanthosis nigricans

  https://www.nhs.uk/conditions/acanthosis-nigricans/

  Acanthosis nigricans is the name for dry, dark patches of skin that usually appear in the armpits, neck or groin. It could be a sign of an underlying condition, so it needs to be checked by a GP. […] The main symptom of acanthosis nigricans is patches of skin that are darker and thicker than usual. […] The patches often appear gradually without any other symptoms. […] Sometimes the skin may be itchy. […] Although acanthosis nigricans is usually harmless, it’s best to get any skin changes checked out. […] Rarely, it can be a sign of something more serious, such as cancer. […] The patches should fade over time once the cause is treated.

• #2 Acanthosis Nigricans – MD Searchlight

  https://mdsearchlight.com/health/acanthosis-nigricans/

  Acanthosis nigricans is a condition that causes the skin to become dark and velvety in texture, often in areas where the skin folds. These could be the back of your neck, underarms, or your groin area. The borders of this darkened skin aren’t usually clear, and the skin might even become thicker. Most often, this condition is linked to diabetes or insulin resistance. However, in rare cases, it could indicate the presence of an internal cancer. Acanthosis nigricans can also be a symptom of hormonal disorders, or it could appear as a side effect of certain medications such as systemic glucocorticoids and oral contraceptives. […] Acanthosis nigricans is a skin condition usually marked by an area of skin that becomes darker and thicker, often accompanied by itching. The skin changes may involve dark, velvety patches or spots that can evolve into noticeable plaques. An interesting aspect of a form of this condition, called malignant acanthosis nigricans, is its relationship with cancer.

• #2 Acanthosis Nigricans: Causes, Diagnosis, and Treatment

  https://dermnetnz.org/topics/acanthosis-nigricans

  Acanthosis nigricans is a skin condition characterised by a velvety papillomatous overgrowth of the epidermis. Darkening and thickening (epidermal hyperplasia) of the skin occurs mainly in the flexural areas, particularly the axillae, groin, inframammary region, and neck. […] Acanthosis nigricans is characterised by symmetric, thickened, brown, velvety patches and plaques that appear most commonly in the intertriginous areas (ie, the axillae, groin, and back and sides of the neck). In women, the nipples and areolae of the breasts, the vulva, and the perineum may also be involved. The lesions of AN may become macerated and malodorous, and skin tags are an additional frequent finding. […] Lesions affecting the mucosal surfaces of the oral cavity, nose, larynx, and oesophagus tend to be more common and more extensive in malignant acanthosis nigricans as does the finding of pruritus. Pruritus may be present and is very common in malignant acanthosis nigricans.

• #2 Acanthosis Nigricans in Dogs – Symptoms, Causes, Diagnosis, Treatment, Recovery, Management, Cost

  https://wagwalking.com/condition/acanthosis-nigricans

  Acanthosis nigricans is found in all breeds and ages of dogs. There are two types. In both types, this disorder causes an increase in the dark pigmentation of the skin. It is usually found in the folds of the skin, and other areas where there is friction. Classic symptoms are typically present, making the diagnosis easy. Type one always is hereditary, being found most commonly and almost exclusively in Dachshunds. This type is incurable. Type two is typically a result of another condition. Once the condition is identified, the acanthosis nigricans can be cured. Acanthosis nigricans is a disorder in dogs, presenting itself as a dark hyperpigmentation to the skin. With both types of acanthosis nigricans, the following symptoms may be found in the friction areas of the dog, such as armpits and groin areas: Brown-pigmented, raised wartlike areas on skin, particularly in body folds. Darkening of skin, becoming thickened, leathery, and hairless. Greasy, crusty, foul smelling areas on darkened skin. Itchiness. Pain may be present in inflamed areas. Patchy, lace like pattern of inflammation on skin. Primary acanthosis is not curable but manageable. This type does not necessarily become inflammatory, and usually develops uniformly on the dog. Secondary acanthosis (post inflammatory hyperpigmentation) is found in all breeds and all ages of dogs, especially in Cocker Spaniels, Pugs, and Dachshunds. This type of acanthosis is inflammatory and patchy, but curable once the cause is identified. If the disorder is caught early enough, simple treatments may be sufficient to manage the condition, thus stopping progression. If there is progression of the disorder, more aggressive therapy will be necessary. In secondary acanthosis, once the underlying cause is identified, it will be treated and the condition will improve, curing the disorder. Depending on the type of acanthosis nigricans your dog is diagnosed with will determine the type of recovery and management you can expect. The primary type requires special bathing and topical ointment therapy to manage the condition, since there is no cure. If your dog is diagnosed with the secondary type, the cause will be determined and the necessary treatment that your veterinarian recommends should cure the condition.

• #2 What are the Symptoms and Treatment of Acanthosis Nigricans?

  https://drpallavisule.com/what-are-the-symptoms-and-treatment-of-acanthosis-nigricans/

  Acanthosis Nigricans is a medical condition that affects the skin and it is often characterised by hyperpigmentation. The skin disorder is known to cause thick, dark (light brown to black) velvety patches on different parts of the body such as the neck, armpit, groin, body folds, skin creases and under the breast. […] Some of the symptoms of Acanthosis Nigricans that you may experience include: The discolouration is on top of the list of symptoms. Light brown to black skin patches become visible on your body. You may experience an unusual feeling that your skin is velvety in nature. The thickness of the skin may occur over time along with the increase in dark patches. Skin tags or skin growth that sticks out of the body may also happen. Itching sensation on the dark patches increases as the disorder intensifies. Foul-smell on the skin patches is one of the symptoms observed in many patients. This condition may develop gradually in the body.

• #2 Acanthosis nigricans: Signs and symptoms

  https://www.aad.org/public/diseases/a-z/acanthosis-nigricans-symptoms

  This skin condition causes some easily recognized signs and symptoms. You may notice that your skin with acanthosis nigricans: Has a brown or black discoloration […] Acanthosis nigricans (AN) tends to appear slowly, taking months or years to form. If it appears suddenly, you should immediately make an appointment to see a board-certified dermatologist. When AN appears suddenly, it can be a warning sign of cancer.

• #2 Acanthosis Nigricans: Treatment, Pictures, and Causes

  https://www.healthline.com/health/acanthosis-nigricans

  If you’ve got the slow-developing benign form of acanthosis nigricans, you’re more likely than not to experience no complications, or few if they do develop, a good outlook, a patch that resolves with treatment. However, an underlying condition like diabetes could still progress to different, more dangerous complications. It’s important to speak to a medical professional if you suspect you might have acanthosis nigricans.

• #2 Acanthosis Nigricans: Causes, Diagnosis &Treatment

  https://my.clevelandclinic.org/health/diseases/12168-acanthosis-nigricans

  Treatment for AN depends on the cause. If AN is due to an underlying condition, such as diabetes or a hormonal condition, treating the condition will treat the skin problems. […] AN isn’t dangerous or harmful. People can live normal, healthy lives with AN. […] However, its important to manage conditions that may be causing AN, such as diabetes, obesity or hormonal conditions. And if the dark patches appear suddenly, see your healthcare provider immediately. The sudden appearance may be a sign of cancer. […] Acanthosis nigricans can be a sign of prediabetes or diabetes.

• #2 Acanthosis Nigricans Causes Symptoms And TreatmentsFacebookPinterestTwitterYouTube

  https://www.diabetescarecommunity.ca/living-well-with-diabetes-articles/acanthosis-nigricans-causes-symptoms-and-treatments/

  Acanthosis nigricans is a condition in which tan- or brown-coloured patches appear on the skin. These patches are usually found in areas with skin folds, such as the neck, armpit and groin, and sometimes the elbows and knees. They are often described as having a thick and ‘velvety’ texture, and may be quite itchy. […] Acanthosis nigricans usually occurs in people who are very overweight. It is also a very common symptom of diabetes, especially in those who are overweight or obese and have poorly controlled blood sugar. […] Acanthosis nigricans is easy to recognize by sight, as the dark, velvety patches of skin are very distinctive. The condition can be diagnosed by healthcare professionals through a physical examination, medical history and blood tests. […] While acanthosis nigricans may not go away completely, the patches may lighten and shrink if you manage your diabetes effectively and lose weight, if needed.

• #2 Acanthosis Nigricans – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK431057/

  Patients usually present with an asymptomatic area of darkening and thickening of the skin, pruritus, and lesions that are velvety, hyperpigmented macules and patches and progress to palpable plaques. In approximately one-third of cases, malignant acanthosis nigricans presents with skin changes before any signs of cancer. In another one-third of cases, lesions arise simultaneously with the neoplasm. In the remaining one-third of cases, the skin findings manifest sometime after the diagnosis of cancer. […] In nearly one-third of patients with malignant acanthosis nigricans, the skin changes usually occur before any clinical signs of the malignancy. In another one-third of patients, the skin lesions develop at the same time as the presentation of cancer. In the remaining patients, the skin features occur after cancer has developed. Malignant acanthosis nigricans can appear suddenly and often is associated with intense pruritus.

• #2 Acanthosis nigricans: To be or not to be afraid (Review)

  https://www.spandidos-publications.com/10.3892/ol.2018.9736

  Acanthosis nigricans (AN), a skin disorder with high prevalence, represents a dermatological condition with esthetic implications, but otherwise mild symptoms. […] Sometimes, it is the first observed sign of a malignancy or of diabetes mellitus, especially in patients with chronic metabolic disorder; therefore, it is not to be taken lightly. […] As a skin lesion, AN is usually asymptomatic. It typically occurs before the age of 40, most frequently in Native Americans, followed by Africans, Hispanics, Caucasians and rarely in Asians. […] Although less frequent than the obesity and insulin resistance-associated forms, the malignant AN is a particularly important type, as it is a sign of an underlying malignancy. […] Compared to other types of AN, the malignant form appears more abruptly, the lesions are more widespread or in non-typical areas, progress more rapidly, are frequently pruritic and are often extended to the mucosa, especially the oral cavity.

• #2 Acanthosis Nigricans: Background, Pathophysiology, Etiology

  https://emedicine.medscape.com/article/1102488-overview

  Patients with malignant AN have a poorer prognosis because the underlying malignancy is often an aggressive tumor. The average survival time for patients with signs of malignant AN is 2 years, though cases in which patients have survived for as long as 12 years have been reported. Most older patients with new-onset AN have an associated internal malignancy.

• #2 Acanthosis nigricans: To be or not to be afraid (Review)

  https://www.spandidos-publications.com/10.3892/ol.2018.9736

  The evolution of paraneoplastic AN is tightly connected to the evolution of cancer, regressing after the surgical ablation of the tumor or in some cytostatic treatments; it could even be a valuable parameter for monitoring of therapy, since it reactivates in case of tumor relapse or development of metastases.

• #2 Acanthosis Nigricans – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK431057/

  Acanthosis nigricans is diagnosed clinically and confirmed with a skin biopsy. Blood tests, endoscopy, or X-rays may be required to eliminate diabetes or cancer. On biopsy, hyperkeratosis, leukocyte infiltration, epidermal folding, and melanocyte proliferation may be seen. The workup focuses on ruling out malignancy. Since the vast majority of cases are associated with insulin resistance and/or obesity, screening for diabetes and measuring glycosylated hemoglobin is recommended. […] Acanthosis nigricans is not treatable. It may fade over time by treating the cause, insulin resistance. Controlling blood glucose levels through exercise and diet often improves symptoms. Topical fade creams can lighten skin in less severe cases. Acanthosis nigricans malignant may resolve if the causative tumor is removed successfully.

• #2 Acanthosis nigricans – Wikipedia

  https://en.wikipedia.org/wiki/Acanthosis_nigricans

  Acanthosis nigricans appears as dark brown-black, poorly defined, velvety patches of skin, typically affecting the face, neck, underarms, genitals, groin, elbows, knees, anus, umbilicus and nasal crease. […] Acanthosis nigricans is likely to improve in circumstances where a known cause is removed. For example, obesity-related acanthosis nigricans will improve with weight loss, and drug-induced acanthosis nigricans is likely to resolve when the drug is ceased. Hereditary variants may or may not fade with age, and malignancy-associated variants may, after a malignancy is removed, fade.

• #2 Acanthosis Nigricans: Causes, Symptoms, Treatment and Prevention

  https://www.apollohospitals.com/diseases-and-conditions/acanthosis-nigricans-causes-symptoms-treatment-and-prevention/

  Acanthosis nigricans is a skin condition that is characterized by areas of dark, velvety discolouration in the body folds. […] The only signs of acanthosis nigricans are skin changes. People may notice dark, thickened, velvety skin in the body folds and creases, usually in the armpit, groin, and back of the neck. The skin may emit an odor or itch. […] People with acanthosis nigricans are at a greater risk of developing type 2 diabetes. […] Once the doctor discovers the cause of acanthosis nigricans, they can recommend treatment. The patches should disappear over time after the treatment. […] Acanthosis nigricans is a treatable skin condition that causes dark patches on the body. Often, it is (though not always) a sign or a symptom of prediabetes or diabetes. […] Acanthosis nigricans will not go away on its own, but people always dont require medical treatment. When no underlying condition is causing this condition, people can decide if they want to treat the dark patches or leave them be. […] People typically see good results after the completion of the treatment. The skin clears. However, the dark spots may not completely fade.

• #2 Acanthosis Nigricans – What You Need to Know

  https://www.drugs.com/cg/acanthosis-nigricans.html

  AN is a condition that causes dark, velvety patches to form on your skin. The patches form on your body folds and creases. The most common areas affected are the back of your neck, armpit, and groin. Your fingers, mouth, nipple area, bellybutton, face, or elbows may also be affected. Your symptoms may be mild or severe. The patches may itch or have an odor. Symptoms develop slowly. Over time, your skin may become thick and leathery. […] The skin patches may not need treatment if they do not cause symptoms. Patches often fade when the cause of AN is treated. Your healthcare provider may stop or change your medicine if it is causing AN. You may need to lose weight. You may also need any of the following: […] Reach or maintain a healthy weight. AN skin patches often clear up after weight loss. Your healthcare provider can help you create a safe weight loss plan if you are overweight.

• #2 Acanthosis Nigricans: Causes, Symptoms, and Treatment Options – The Kingsley Clinic

  https://thekingsleyclinic.com/resources/acanthosis-nigricans-causes-symptoms-and-treatment-options/

  Weight loss is a key factor in reducing the severity of acanthosis nigricans, particularly when it is linked to insulin resistance. […] Regular exercise enhances insulin sensitivity, which can help alleviate symptoms of acanthosis nigricans. […] Addressing insulin resistance is one of the most effective strategies for managing acanthosis nigricans. […] It is important to seek medical advice if you notice sudden changes in your skin or if the condition worsens despite home treatments. […] Early diagnosis and intervention are crucial for managing the condition and preventing complications.

• #2 Acanthosis Nigricans: Symptoms, Causes & Treatment

  https://tap.health/acanthosis-nigricans-treatment/

  Acanthosis nigricans (AN) is a skin condition characterized by dark, velvety patches, often appearing in skin folds like the neck, armpits, and groin. […] AN manifests as thickened, dark brown or black skin patches. These patches can be itchy or have a velvety texture. […] The most noticeable symptom is the darkening of the skin. This discoloration can range from light brown to dark brown or even black. […] While AN itself isn’t life-threatening, it’s often associated with insulin resistance and conditions like prediabetes and type 2 diabetes. […] Early diagnosis and management are vital in preventing serious complications. […] The appearance of AN should not be ignored, as it can be a warning sign of insulin resistance, a precursor to type 2 diabetes. […] If you notice dark, velvety patches on your skin, especially if you have a family history of diabetes or are experiencing other symptoms like increased thirst or frequent urination, it’s crucial to consult a doctor. […] Early diagnosis and appropriate treatment are vital, particularly in high-risk populations prevalent in India and tropical countries.

• #2 Acanthosis Nigricans | Rady Children’s Hospital

  https://www.rchsd.org/health-article/acanthosis-nigricans/

  Acanthosis nigricans appears gradually with dark, velvety patches of skin in body creases and folds, usually in the neck, armpits, or groin. […] It can be found on other parts of the body, including the face, chest, elbows, knees, and knuckles. […] Children may have mild itching, but this is uncommon.

• #2 ACANTHOSIS NIGRICANS – CAUSES, DIAGNOSIS AND TREATMENT | Mya Care

  https://myacare.com/blog/acanthosis-nigricans-causes-diagnosis-and-treatment

  Acanthosis nigricans result in patches of dark, thick, velvety skin in the folds and crevices of the body. Usually, the groin, neck, and armpits are affected. […] Hyperkeratosis and hyperpigmentation are the primary signs and symptoms of acanthosis nigricans. A person can notice these changes in their skin’s tone and texture. […] The signs of acanthosis nigricans usually come on gradually. However, rapidly escalating symptoms could be a sign of cancer, and you should seek help from a dermatologist. […] The following are the symptoms of this skin condition: Brown or black skin patches, Skin with a velvety feel, Itchiness, Skin tags, Areas of skin that smell bad. […] Some people have these skin changes on just one side of their bodies. This condition is referred to as unilateral acanthosis nigricans.

• #2 Acanthosis nigricans – Augusta HealthSearchClose SearchSearch IconSearch IconClose Search IconMobile Menu IconMobile Menu Close IconInstagramFacebookTwitterYoutube

  https://www.augustahealth.com/disease/acanthosis-nigricans/

  Skin changes are the only signs of acanthosis nigricans. You’ll notice dark, thickened, velvety skin in body folds and creases — typically in your armpits, groin and back of the neck. The skin changes usually appear slowly. The affected skin may also have an odor or itch. […] Consult your doctor if you notice changes in your skin — especially if the changes appear suddenly. You may have an underlying condition that needs treatment.

• #2 Acanthosis Nigricans Treatment: Diagnosis, Causes & Symptoms

  https://www.olivaclinic.com/blog/acanthosis-nigricans-treatment/

  Acanthosis nigricans occurs most commonly in skin folds due to high friction. It appears earliest in the underarm area and back of the neck (nape), but can also occur on groin folds, below breasts in females, elbows, knuckles, knees, face and rarely in other body areas like palms, soles or navel. […] In most cases, acanthosis nigricans does not go away without treatment. Treating the skin symptoms is not sufficient; your medical practitioner needs to address the underlying causes, like insulin resistance, to treat this type of pigmentation. […] If you see dark velvety patches appearing suddenly on your neck, underarms, skin folds or other body areas, you should visit a dermatologist immediately. […] Acanthosis nigricans does not go away on its own. Treating the symptoms and the underlying cause can minimise it.

• #3 Acanthosis Nigricans: Causes, Symptoms, Diagnosis & Treatment

  https://www.webmd.com/skin-problems-and-treatments/acanthosis-nigricans-overview

  Acanthosis nigricans is a skin condition that results in thick, velvety, light-brown-to-black patches that often appear in the skin folds in the front or back of your neck, armpit, elbows, knees, belly button, or under your breast. It shows up slowly, usually taking months to a year. If you see these patches develop suddenly, see a doctor immediately, as it could be a sign of cancer. […] One main sign of acanthosis nigricans is the thick, velvety, light-brown-to-black patch that often appears in the skin folds in the front or back of your neck, armpit, elbows, knees, belly button, or under your breast. […] Acanthosis nigricans might also feel itchy and smell, but it doesn’t cause pain. […] This skin condition shows up slowly, taking months to a year. If you suddenly see them on you, see a doctor or dermatologist immediately, as it could be a sign of cancer.

• #3 Acanthosis Nigricans: Causes, Diagnosis, and Treatment

  https://dermnetnz.org/topics/acanthosis-nigricans

  Acanthosis nigricans is a skin condition characterised by a velvety papillomatous overgrowth of the epidermis. Darkening and thickening (epidermal hyperplasia) of the skin occurs mainly in the flexural areas, particularly the axillae, groin, inframammary region, and neck. […] Acanthosis nigricans is characterised by symmetric, thickened, brown, velvety patches and plaques that appear most commonly in the intertriginous areas (ie, the axillae, groin, and back and sides of the neck). In women, the nipples and areolae of the breasts, the vulva, and the perineum may also be involved. The lesions of AN may become macerated and malodorous, and skin tags are an additional frequent finding. […] Lesions affecting the mucosal surfaces of the oral cavity, nose, larynx, and oesophagus tend to be more common and more extensive in malignant acanthosis nigricans as does the finding of pruritus. Pruritus may be present and is very common in malignant acanthosis nigricans.

• #3 Acanthosis nigricans – Symptoms & causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/acanthosis-nigricans/symptoms-causes/syc-20368983

  Acanthosis nigricans is a condition that causes areas of dark, thick velvety skin in body folds and creases. It typically affects the armpits, groin and neck. […] The main sign of acanthosis nigricans is dark, thick, velvety skin in body folds and creases. It often appears in the armpits, groin and back of the neck. It develops slowly. The affected skin might be itchy, have an odor and develop skin tags.

• #3 Acanthosis nigricans: Diagnosis and treatment

  https://www.aad.org/public/diseases/a-z/acanthosis-nigricans-treatment

  Acanthosis nigricans (AN) is more common in people who have diabetes. […] Sometimes, AN can be a warning sign of pre-diabetes, thyroid disease, or another condition. […] If you have pre-diabetes, getting that under control often helps to fade the dark patches on your skin. […] If testing finds a problem with your thyroid or adrenal glands, treating that condition can clear your skin. […] It’s also possible that treating an underlying medical condition like pre-diabetes won’t completely clear the dark patches. […] If you have AN, it is essential to find out whether another disease is causing it. Finding and treating an undiagnosed disease may clear (or partially clear) your skin. […] If a disease is not causing your AN or you do not see the results you want from treating a related disease, a dermatologist can treat your skin.

• #3 Acanthosis nigricans | nidirect

  https://www.nidirect.gov.uk/conditions/acanthosis-nigricans

  Acanthosis nigricans is the name for dry, dark patches of skin that usually appear in the armpits, neck or groin. It could be a sign of an underlying condition, so it needs to be checked by a GP. […] The main symptom of acanthosis nigricans is patches of skin that are darker and thicker than usual. The patches often appear gradually without any other symptoms. […] Acanthosis nigricans patches are dry and feel similar to velvet. […] These patches can appear anywhere on the body, are dry and feel similar to velvet, are most common in skin folds, such as the armpits, neck or groin, can have tiny growths on the patches, and can sometimes itch. […] You should see your GP if you have new dark patches on your skin or any skin changes you’re unsure about. […] Although it’s usually harmless, it’s best to get any skin changes checked out.

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