Materiały źródłowe

• #1 Contact Dermatitis: Symptoms, Causes, Types & Treatments

  https://my.clevelandclinic.org/health/diseases/6173-contact-dermatitis

  Contact dermatitis is a rash on your skin that develops when you come into contact with something you’re allergic to or something that irritated your skin. The rash can swell and be itchy and uncomfortable. Avoiding what caused your rash helps prevent it from returning. […] Contact dermatitis causes a rash to form on your skin. This rash can form anywhere on your body and is usually a patch of skin covered in bumps that are red, itchy and sometimes painful. The rash can last for a few days to a couple of weeks. It generally goes away quickly if you identify what caused your reaction and stay away if you can avoid that irritant or allergen. […] Symptoms of contact dermatitis include a rash on your skin that’s: Red to purple or darker than your natural skin tone. Swollen, hive-like or elevated from the skin surrounding it. Bumpy with a small cluster of pimples or blisters. Oozing fluid or pus. Painful with a burning or stinging sensation. Flaky or scaling. Itchy.

• #1 Contact Dermatitis – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK459230/

  Contact dermatitis is an inflammatory eczematous skin disease. It is caused by chemicals or metal ions that exert toxic effects without inducing a T-cell response (contact irritants) or by small reactive chemicals that modify proteins and induce innate and adaptive immune responses (contact allergens). Contact dermatitis is divided into irritant contact dermatitis and allergic contact dermatitis. Irritant contact dermatitis is a nonspecific response of the skin to direct chemical damage that releases mediators of inflammation predominantly from epidermal cells while allergic contact dermatitis is a delayed (type 4) hypersensitivity reaction to exogenous contact antigens. Symptoms of irritant contact dermatitis may include burning, itching, stinging, soreness, and pain, particularly at the beginning of the clinical course, while pruritus is more common in allergic contact dermatitis. Both irritant contact dermatitis and allergic contact dermatitis can present with three morphological patterns. The acute irritant reaction usually reaches its peak quickly, within minutes to few hours after exposure, and then starts to heal, while in allergic contact dermatitis, the elicitation time depends on the characteristics of the sensitizer, the intensity of exposure, and degree of sensitivity. Lesions usually appear 24 to 72 hours after the exposure to the causative agent and reach their peak at approximately 72 to 96 hours. Allergic contact dermatitis improves more slowly than irritant contact dermatitis and then recurs faster (in a few days) when exposure is re-established. The prognosis of patients with contact dermatitis depends on the cause and lifestyle. Isolated cases usually resolve if the offending agent exposure is discontinued. Those who do not remain compliant and continue to wear jewelry with metal or are exposed to plants because of lifestyle generally tend to have a chronic course. Relapses are very common.

• #1 Contact Dermatitis: Causes, Symptoms, Treatments

  https://www.webmd.com/skin-problems-and-treatments/contact-dermatitis

  Symptoms of a contact allergy usually show up near where you touched the thing you’re allergic to. […] You’ll notice your skin may be: Red, Itchy, Dry, cracked, or scaly, Covered in bumps or blisters. Blistering is rare. If you see blisters, contact your doctor, Swollen, Burning, Tender. […] Irritant contact dermatitis (skin damage) tends to burn and be more painful than itchy. When something is irritating or damaging your skin, you’ll probably see a rash right away. With an allergy, it may be a day or two before the rash shows up. […] Many of the symptoms can be the same. In both cases, your skin may blister, or you may get a raised red rash. Your skin will itch and may burn. […] Contact dermatitis can form anywhere on your body. It depends on what part of your body touches the irritant.

• #1 Contact Dermatitis: Causes, Symptoms, and Treatment

  https://www.healthline.com/health/contact-dermatitis

  Contact dermatitis symptoms may depend on the cause and how sensitive you are to the substance. […] Common symptoms associated with contact dermatitis may include: dry, scaly, flaky skin, a bumpy, itchy rash, oozing blisters, hives, skin that burns or stings, skin that feels stiff or tight, sun sensitivity, swelling, tenderness, or hot skin. […] Another common symptom is skin discoloration. Light skin may turn red, while dark skin may turn purple, dark brown, or gray. […] Symptoms of allergic contact dermatitis typically take 1 to 3 days to appear. However, you need exposure to a certain allergen at least once before developing allergic contact dermatitis, which is when you become sensitized to it. […] Irritant contact dermatitis usually causes symptoms within minutes and doesn’t require prior exposure to manifest. […] It can take as long as 2 to 4 weeks for allergic contact dermatitis to go away. Irritant contact dermatitis usually improves more quickly.

• #1

  https://www.nhs.uk/conditions/contact-dermatitis/symptoms/

  Contact dermatitis affects the skin. The type of skin symptoms you get can depend on whether the dermatitis is caused by an irritant or an allergic reaction. […] The symptoms of irritant contact dermatitis can appear straight away after you are exposed to the irritant or may not appear until within 48 hours after exposure. […] The symptoms can range from mild dryness, redness, burning or stinging of the skin to very painful blisters that can become filled with fluid. […] The symptoms of contact dermatitis can appear immediately after exposure or there may be a delayed reaction, depending on the type of allergy you have. […] The symptoms can range from mild redness and itchiness of the skin to skin that becomes cracked, filled with fluid, extremely itchy and has a stinging sensation. […] Occasionally, areas of skin affected by contact dermatitis can become infected. Signs of an infection can include: your existing symptoms getting rapidly worse, discharge from your skin, increasing pain, feeling generally unwell, feeling hot or shivery.

• #1 Pediatric Contact Dermatitis Clinical Presentation: History, Physical Examination, Complications

  https://emedicine.medscape.com/article/911711-clinical

  Subacute contact dermatitis is less edematous and erythematous. Little or no drainage of serum is present. Superficial papules and excoriations are common. […] Chronic contact dermatitis is characterized by scaling, fissuring, and lichenification with minimal edema. Mild erythema and excoriations are common. […] In allergic contact dermatitis, skin involvement may extend beyond the borders of the region exposed to the allergen. Edema is generally much more pronounced with allergic contact dermatitis than with irritant contact dermatitis, and vesiculation is more common. […] Phototoxic photo contact dermatitis is essentially a severe sunburn or an allergic reaction to the sun, with a primary symptom of burning. In photoallergic photo contact dermatitis, manifestations on sun-exposed areas of the body range from sunburns to eczematous dermatitis or hyperpigmentation. […] Contact urticaria appears as hives or wheals or edematous pale or pink plaques.

• #1 Contact Dermatitis: Symptoms, Causes, Types & Treatments

  https://my.clevelandclinic.org/health/diseases/6173-contact-dermatitis

  If your body doesn’t like something that touches your skin, your immune system responds. When you see your skin swell or become inflamed, that’s a sign that your white blood cells are responding to the allergen or irritant, which can cause an itchy rash. The rash may appear in minutes if it’s caused by an irritant, or may take hours or days to appear after exposure to an allergen. […] It can take several weeks for the contact dermatitis rash to go away with treatment. You might notice symptoms of itching decrease or go away a couple of days after treatment begins even though you still have a visible rash on your skin. Mild cases of contact dermatitis could go away within a few days with avoidance of what caused your symptoms, with no additional treatment necessary. If you experience symptoms of contact dermatitis, reach out to a healthcare provider for help with your symptoms.

• #1 Easing the itch: how long does contact dermatitis last? | CityMD

  https://www.citymd.com/health-and-wellness/easing-the-itch-how-long-does-contact-dermatitis-last

  Contact dermatitis is a common skin condition that occurs when your skin reacts to certain substances, such as cosmetics, jewelry, plants, or chemicals. The reaction can range from a mild rash to more severe symptoms, depending on the individual and the irritant involved. […] The duration of contact dermatitis can vary from person to person and depends on several factors. Mild cases may resolve within a couple of weeks, while more severe or persistent cases may last for a few weeks or even months. […] Factors like the specific irritant, the affected area of skin, and the individuals overall health and immune response influence how long contact dermatitis lasts. […] If you’re experiencing prolonged or worsening symptoms, it’s advisable to seek medical advice from a healthcare professional at your local CityMD.

• #1

  https://www.nhs.uk/conditions/contact-dermatitis/

  Contact dermatitis causes the skin to become itchy, blistered, dry and cracked. […] This reaction usually occurs within a few hours or days of exposure to an irritant or allergen. […] Symptoms can affect any part of the body but most commonly the hands and face. […] See a GP if you have persistent, recurrent or severe symptoms of contact dermatitis.

• #1 Contact Dermatitis: Causes, Symptoms, and Treatment

  https://skinsight.com/skin-conditions/contact-dermatitis/

  Allergic contact dermatitis may occur on any location of the body. […] The affected areas of skin can look different on different body areas and on different people. There is often redness or other skin color changes, and there may be vesicles or bullae (blisters of different sizes), oozing, and crusting. Or there may be scaly plaques (elevated areas larger than a thumbnail). The lesions may have distinct borders with straight edges and sharp angles. In lighter skin colors, the areas are often pink or red, and in darker skin colors, the redness may be harder to see or may look more purple or gray. […] Affected areas are typically severely itchy. […] Eyelid swelling is frequently seen when the allergen is unknowingly transferred from finger to the eyelid. […] When the dermatitis is chronic, the elevated areas can become thickened. Scratching the skin can cause cracks that may become infected with bacteria.

• #1 Contact Dermatitis – Dermatologic Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/dermatologic-disorders/dermatitis/contact-dermatitis

  Contact dermatitis is inflammation of the skin caused by direct contact with irritants (irritant contact dermatitis) or allergens (allergic contact dermatitis). Symptoms include pruritus and sometimes a burning pain. Skin changes include erythema, scaling, skin swelling, and sometimes blistering and ulceration. […] Acute ICD is more painful than pruritic. Signs range from erythema, scaling, and edema to erosions, crusting, and blistering. Chronic and cumulative ICD is more often pruritic. […] ACD is more pruritic than painful. Skin changes range from erythema, scaling, and edema, through vesiculation to severe swelling with bullae. Changes often occur in a pattern, distribution, or combination that suggests a specific exposure, such as linear streaking on an arm or leg (eg, due to brushing against poison ivy) or circumferential erythema (under a wristwatch or waistband).

• #1 Allergic Contact Dermatitis > Fact Sheets > Yale Medicine

  https://www.yalemedicine.org/conditions/dermatitis

  A red, itchy rash with no known cause. […] This itchy skin rash can result from exposure to a chemical or compound that causes a response from the skins immune system. The rash will arise at the point of contact with the allergen. The area is usually a pink or red color and feels itchy. Contact dermatitis may appear flat or raised, and in severe cases, blisters filled with clear fluid may result. […] Although some people react more quickly than others, these rashes tend to take time to develop and don’t occur with the first exposure. […] According to Dr. Choate, allergic contact dermatitis is a condition that causes progressively more serious reactions. It typically can worsen over time. The initial rash may be relatively mild, he says. „And each subsequent time you’re exposed, it can actually get worse and worse until it reaches a maximum severity.

• #1 Contact dermatitis – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/contact-dermatitis/symptoms-causes/syc-20352742

  Contact dermatitis can appear as an itchy rash. […] The rash often shows up within days of exposure. […] Contact dermatitis shows up on skin that has been directly exposed to the substance causing the reaction. For example, the rash may show up along a leg that brushed against poison ivy. The rash can develop within minutes to hours of exposure, and it can last 2 to 4 weeks. […] Signs and symptoms of contact dermatitis vary widely and may include: An itchy rash, Leathery patches that are darker than usual (hyperpigmented), typically on brown or Black skin, Dry, cracked, scaly skin, typically on white skin, Bumps and blisters, sometimes with oozing and crusting, Swelling, burning or tenderness.

• #1 Contact dermatitis – Diagnosis and treatment – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/contact-dermatitis/diagnosis-treatment/drc-20352748

  Patients can get allergic to various things that they are using, such as soaps, lotions, makeups, anything that contacts the skin. […] Your health care provider may be able to diagnose contact dermatitis by talking to you about your signs and symptoms. You might be asked questions to help identify the cause of your condition and uncover clues about the trigger substance. And you’ll likely undergo a skin exam to assess the rash. […] This test can be useful if the cause of your rash isn’t apparent or if your rash recurs often. But the redness indicating a reaction can be hard to see on brown or Black skin, which may lead to a missed diagnosis.

• #1 Contact Dermatitis Symptoms | Northwestern Medicine

  https://www.nm.org/conditions-and-care-areas/dermatology/contact-dermatitis/symptoms

  Symptoms of contact dermatitis can appear within minutes or as much as 48 hours after contact with an irritant or exposure to an allergen. Symptoms include: Red, inflamed rash […] Blistering […] Oozing and crusting over of the rash […] Itching, sometimes severe […] Tenderness or burning […] Cracked, scaly skin […] Temporary thickening or swelling of the skin. Symptoms of a complication include: White or yellowish discharge from the rash […] Fever […] Rash doesnt heal within three to four weeks […] Nasal congestion, difficulty breathing or other signs of allergic reaction. Always seek emergency medical care if you are having difficulty breathing or suspect an infection.

• #1 Allergic Contact Dermatitis > Fact Sheets > Yale Medicine

  https://www.yalemedicine.org/conditions/dermatitis

  Allergic contact dermatitis is best treated by identifying and avoiding the allergen(s) that you are sensitized to. […] For symptom relief, applying a hydrocortisone cream and taking an antihistamine can help stop itching. Your doctor may prescribe topical steroids, and if the condition is widespread and more severe, it can be treated with systemic steroids such as Prednisone, which doctors will sometimes prescribe to ensure that the condition is fully treated. It can take a week to 10 days for the rash to resolve, but patients should experience relief from itchiness shortly after treatment begins. […] Fully evaluating allergic contact dermatitis through patch testing, especially when its recurrent, can provide a patient with substantial quality of life improvements.

• #2 Contact Dermatitis – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK459230/

  Contact dermatitis is an inflammatory eczematous skin disease. It is caused by chemicals or metal ions that exert toxic effects without inducing a T-cell response (contact irritants) or by small reactive chemicals that modify proteins and induce innate and adaptive immune responses (contact allergens). Contact dermatitis is divided into irritant contact dermatitis and allergic contact dermatitis. Irritant contact dermatitis is a nonspecific response of the skin to direct chemical damage that releases mediators of inflammation predominantly from epidermal cells while allergic contact dermatitis is a delayed (type 4) hypersensitivity reaction to exogenous contact antigens. Symptoms of irritant contact dermatitis may include burning, itching, stinging, soreness, and pain, particularly at the beginning of the clinical course, while pruritus is more common in allergic contact dermatitis. Both irritant contact dermatitis and allergic contact dermatitis can present with three morphological patterns. The acute irritant reaction usually reaches its peak quickly, within minutes to few hours after exposure, and then starts to heal, while in allergic contact dermatitis, the elicitation time depends on the characteristics of the sensitizer, the intensity of exposure, and degree of sensitivity. Lesions usually appear 24 to 72 hours after the exposure to the causative agent and reach their peak at approximately 72 to 96 hours. Allergic contact dermatitis improves more slowly than irritant contact dermatitis and then recurs faster (in a few days) when exposure is re-established. The prognosis of patients with contact dermatitis depends on the cause and lifestyle. Isolated cases usually resolve if the offending agent exposure is discontinued. Those who do not remain compliant and continue to wear jewelry with metal or are exposed to plants because of lifestyle generally tend to have a chronic course. Relapses are very common.

• #2 Contact Dermatitis: Causes, Symptoms, and Treatment

  https://www.healthline.com/health/contact-dermatitis

  Contact dermatitis symptoms may depend on the cause and how sensitive you are to the substance. […] Common symptoms associated with contact dermatitis may include: dry, scaly, flaky skin, a bumpy, itchy rash, oozing blisters, hives, skin that burns or stings, skin that feels stiff or tight, sun sensitivity, swelling, tenderness, or hot skin. […] Another common symptom is skin discoloration. Light skin may turn red, while dark skin may turn purple, dark brown, or gray. […] Symptoms of allergic contact dermatitis typically take 1 to 3 days to appear. However, you need exposure to a certain allergen at least once before developing allergic contact dermatitis, which is when you become sensitized to it. […] Irritant contact dermatitis usually causes symptoms within minutes and doesn’t require prior exposure to manifest. […] It can take as long as 2 to 4 weeks for allergic contact dermatitis to go away. Irritant contact dermatitis usually improves more quickly.

• #2 Contact dermatitis – Symptoms and causes – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/contact-dermatitis/symptoms-causes/syc-20352742

  Contact dermatitis can appear as an itchy rash. […] The rash often shows up within days of exposure. […] Contact dermatitis shows up on skin that has been directly exposed to the substance causing the reaction. For example, the rash may show up along a leg that brushed against poison ivy. The rash can develop within minutes to hours of exposure, and it can last 2 to 4 weeks. […] Signs and symptoms of contact dermatitis vary widely and may include: An itchy rash, Leathery patches that are darker than usual (hyperpigmented), typically on brown or Black skin, Dry, cracked, scaly skin, typically on white skin, Bumps and blisters, sometimes with oozing and crusting, Swelling, burning or tenderness.

• #2 Azthena logo with the word Azthena

  https://www.news-medical.net/health/Irritant-vs-Allergic-Contact-Dermatitis.aspx

  Contact dermatitis is a condition in which the skin suffers inflammation, becoming red, itchy, swollen, and perhaps developing rashes, after coming into contact with a specific substance. […] Allergic reactions are either acute (within 24-48 hours), or require some days or months to first manifest. Such reactions are typically very pruritic, papular, and ill-defined. The skin is reddened. Vesicular and oozing lesions may occur. Ulceration is rare. However, higher concentrations of some allergenic substances may give rise to irritant reactions as well. […] Irritant contact dermatitis is more often associated with burning or stinging as well as, or instead of, itching. The skin may be fissured, as well as rough and dry. Redness, oozing lesions, and inflammation may develop with chronic irritant contact dermatitis. Pain may be present if the skin is cracked and cut, and the area is usually very tender. […] Both forms of contact dermatitis are found on the parts of the body that are exposed to the causative agent. The hands, especially the interdigital webs, are thus a typical location. Eczematous lesions with oozing, papules, crusting, or thickening, are often present.

• #2 Irritant contact dermatitis

  https://dermnetnz.org/topics/irritant-contact-dermatitis

  Irritant contact dermatitis is a form of skin inflammation caused by contact with substances and/or environmental factors that injure the skin, damaging the skin barrier. […] Irritant contact dermatitis develops when chemical or physical agents damage the skin surface faster than the skin can repair. […] Irritant contact dermatitis: […] Usually is confined to the site of contact with the irritant […] Burning and pain more common symptoms than itch […] Acute due to a single severe exposure […] Localised well-defined, redness, papules, swelling, blistering (vesicles/bullae) […] Chronic due to mild irritants or repetitive cumulative exposure […] Initial dryness and cracking of the skin […] Evolves to include inflammatory changes with redness and itch […] May develop tolerance or hardening with time. […] Interdigital dermatitis, also called the sentinel sign, is regarded as an early stage of irritant contact dermatitis affecting the hands. […] Chronic irritant contact dermatitis can be slow to improve or resolve, especially of the hands, without obsessive care.

• #2

  https://www.nhs.uk/conditions/contact-dermatitis/symptoms/

  Contact dermatitis affects the skin. The type of skin symptoms you get can depend on whether the dermatitis is caused by an irritant or an allergic reaction. […] The symptoms of irritant contact dermatitis can appear straight away after you are exposed to the irritant or may not appear until within 48 hours after exposure. […] The symptoms can range from mild dryness, redness, burning or stinging of the skin to very painful blisters that can become filled with fluid. […] The symptoms of contact dermatitis can appear immediately after exposure or there may be a delayed reaction, depending on the type of allergy you have. […] The symptoms can range from mild redness and itchiness of the skin to skin that becomes cracked, filled with fluid, extremely itchy and has a stinging sensation. […] Occasionally, areas of skin affected by contact dermatitis can become infected. Signs of an infection can include: your existing symptoms getting rapidly worse, discharge from your skin, increasing pain, feeling generally unwell, feeling hot or shivery.

• #2 Contact Dermatitis: Symptoms, Causes, Types & Treatments

  https://my.clevelandclinic.org/health/diseases/6173-contact-dermatitis

  If your body doesn’t like something that touches your skin, your immune system responds. When you see your skin swell or become inflamed, that’s a sign that your white blood cells are responding to the allergen or irritant, which can cause an itchy rash. The rash may appear in minutes if it’s caused by an irritant, or may take hours or days to appear after exposure to an allergen. […] It can take several weeks for the contact dermatitis rash to go away with treatment. You might notice symptoms of itching decrease or go away a couple of days after treatment begins even though you still have a visible rash on your skin. Mild cases of contact dermatitis could go away within a few days with avoidance of what caused your symptoms, with no additional treatment necessary. If you experience symptoms of contact dermatitis, reach out to a healthcare provider for help with your symptoms.

• #2 Pediatric Contact Dermatitis Clinical Presentation: History, Physical Examination, Complications

  https://emedicine.medscape.com/article/911711-clinical

  With irritant contact dermatitis, symptoms may occur within minutes of the exposure. Mild irritants require prolonged or repeated exposure before inflammation is noted, while strong irritants, such as strong acids and alkalis, can produce an immediate reaction similar to a thermal burn. […] Allergic (type IV hypersensitivity) reactions usually take 6-24 hours to produce symptoms. Contact urticaria is usually rapid in onset. […] Has the dermatitis been spreading? Allergic contact dermatitis frequently appears to spread over time. In fact, this represents delayed reactions to the allergens. […] In acute contact dermatitis, the skin is bright red and edematous. Clear fluid-filled vesicles or bullae may develop in these areas. As lesions break, they weep clear serum. Yellow crusts form as this serum dries.

• #2 Allergic or Irritative Contact Dermatitis: Everything You Need to Know

  https://www.dexeryl.com/en/your-skin/atopic-dermatitis/different-types-of-eczema/allergic-contact-eczema

  In the acute phase, contact dermatitis is characterized by skin redness and dry patches that cause intense itching (pruritus). On these patches, vesicles filled with clear fluid burst and ooze, especially after scratching. These lesions appear in the direct contact area with the allergen but can sometimes spread. Sensitive areas such as the eyelids, face, or genital organs may also exhibit edema (swelling). […] The subacute phase is marked by crust formation, scaling, and skin hyperpigmentation. The chronic phase is marked by lichenification: the skin thickens and becomes rough. These symptoms often affect the hands, which are the main location for contact dermatitis. […] Allergy generally manifests with significant itching. The symptoms of irritative contact dermatitis are mainly sensations of burning, tingling, and pain. In case of irritation, symptoms appear quickly. In allergic contact dermatitis, lesions develop 1 to 3 days after exposure to the allergen, in case of repeated exposure. Allergic contact dermatitis heals slower than the irritative form.

• #2 Allergic contact dermatitis – Wikipedia

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

  Other symptoms may include itching, skin redness or inflammation, localized swelling and the area may become more tender or warmer. If left untreated, the skin may darken and become leathery and cracked. Pain can also be present. Dermatitis can occur anywhere on the skin, but is most common on the hands (22% of people), scattered across the body (18%), or on the face (17%). […] The rash and other symptoms typically occur 24 to 48 hours after the exposure; in some cases, the rash may persist for weeks. Once an individual has developed a skin reaction to a certain substance it is most likely that they will have it for the rest of their life, and the symptoms will reappear when in contact with the allergen.

• #2 Contact Dermatitis – Dermatologic Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/dermatologic-disorders/dermatitis/contact-dermatitis

  Because of the time needed to recruit and expand T cells in the epidermis, ACD typically takes 1 day after exposure to become noticeable and 2 to 3 days to become further aggravated (crescendo reaction). In contrast, ICD typically decreases in intensity [decrescendo reaction] after 1 or 2 days. […] Resolution may take up to 3 weeks after discontinuation of exposure. Reactivity is usually lifelong, so identified allergens must be avoided lifelong.

• #2 Contact dermatitis Information | Mount Sinai – New York

  https://www.mountsinai.org/health-library/diseases-conditions/contact-dermatitis

  Contact dermatitis is a condition in which the skin becomes red, sore, or inflamed after direct contact with a substance. […] Symptoms vary, depending on the cause and whether the dermatitis is due to an allergic reaction or an irritant. The same person may also have different symptoms over time. […] Allergic reactions may occur suddenly, or develop after months or years of exposure. […] Contact dermatitis often occurs on the hands. Hair products, cosmetics, and perfumes can lead to skin reactions on the face, head, and neck. Jewelry can also cause skin problems in the area under it. […] Itching is a common symptom. In the case of an allergic dermatitis, itching can be severe. […] You may have red, streaky, or patchy rash where the substance touched the skin. The allergic reaction is often delayed so that the rash may not appear until 24 to 48 hours after exposure. […] The rash may: Have red bumps that may form moist, weeping blisters, Feel warm and tender, Oo

• #2 Eczema types: Contact dermatitis signs and symptoms

  https://www.aad.org/public/diseases/eczema/types/contact-dermatitis/symptoms

  You can develop contact dermatitis on any part of your skin that touches something which either irritates your skin or causes an allergic reaction. Because we touch most things with our hands, contact dermatitis often develops here. […] When signs and symptoms appear, you may have: Itchy skin (often intense), Rash (skin discolored, swollen, and hot), Excessively dry skin that may crack, Tender skin, Burning or stinging, Hives (round welts on the skin that itch intensely), Fluid-filled blisters, Oozing blisters that leave crusts and scales. […] Before the rash appears, you may feel an intense itch, burning sensation, or pain. These symptoms often continue after the rash appears. […] If the sores break open, they can leak fluid. […] If you continue to touch whats causing the contact dermatitis, your skin often thickens, becomes scaly, and develops deep cracks. […] While contact dermatitis often develops on the hands, it can appear anywhere on your skin, including feet, lips, or groin area. […] The rash around this womans eye was caused by an allergic reaction to her artificial nails.

• #2 Contact Dermatitis – Skin Disorders – Merck Manual Consumer Version

  https://www.merckmanuals.com/home/skin-disorders/itching-and-dermatitis/contact-dermatitis

  The rash in allergic contact dermatitis often occurs in a pattern that suggests exposure to a specific substance. For instance, poison ivy causes line-like streaks to form on the skin. Touching the rash or blister fluid does not spread contact dermatitis either to other people or to other parts of the body that did not make contact with the substance.

• #2 Contact Dermatitis: When Symptoms Start and Could End

  https://www.verywellhealth.com/contact-dermatitis-8719314

  Healing from contact dermatitis does not happen overnight. If the trigger is eliminated and avoided, it typically takes two to three weeks for the symptoms to clear completely. Scratching affected areas can prolong your symptoms and lead to complications. If you come into contact with the allergen or irritant again, contact dermatitis comes back. […] Most cases of contact dermatitis are manageable. However, in rare and severe cases, some may experience permanent effects on the skin and complications, including: […] Contact dermatitis is a set of skin symptoms caused by contact with an irritating substance or allergen. It can occur anywhere on the body and cause itchy or painful rashes, blisters, discoloration, swelling, and sores. If the trigger is not present, symptoms typically resolve within three weeks.

• #2

  https://www.aurorahealthcare.org/services/dermatology/dermatitis

  Common symptoms of dermatitis include a skin rash and itchy skin. However, there are a range of symptoms depending on your type of dermatitis. […] Common symptoms of dermatitis include: Red, inflamed or bumpy skin, Itching, Dry patches, Swelling, Blisters or oozing, Crusting or flaking skin. […] Its important to seek treatment if youre suffering from extreme dermatitis symptoms, such as intense itching or blisters. If left untreated, it could lead to viral or bacterial skin infections, which can potentially spread or leave permanent scars.

• #2

  https://www2.hse.ie/conditions/contact-dermatitis/symptoms/

  Contact dermatitis causes the skin to become itchy, blistered, dry or cracked. […] The skin can become inflamed (swollen). Lighter skin can become red. Darker skin can become dark brown, purple or grey. […] These symptoms can develop on any area of the body but they happen most often on the hands and face. […] Symptoms caused by an irritant usually appear immediately or within 48 hours. […] Symptoms caused by an allergen often take several days to appear. […] But some people experience severe and long-lasting symptoms. This may affect their quality of life. […] Some substances may cause other symptoms. Allergens may cause areas of your skin to itch. Irritants may cause a burning or stinging sensation. […] Sometimes areas of skin affected by contact dermatitis can become infected. […] Signs of an infection can include: your existing symptoms getting worse, discharge from your skin, increasing pain, feeling generally unwell, feeling hot or shivery.

• #2 Contact Dermatitis Symptoms, Treatment, Causes & Allergic Rash

  https://www.medicinenet.com/contact_dermatitis/article.htm

  Contact dermatitis appears as a weepy, oozy, red, elevated rash (an eczematous eruption) at the site of direct contact with the inciting substance. […] The major complaint of most patients is itching or burning at that site. Older lesions are itchy but may only appear red, elevated, and scaly. […] Contact dermatitis generally requires treatment with topical steroid creams, but if extensive, may require taking steroids orally. […] Patients with contact dermatitis complain of itching and burning at the site of a red, elevated, crusty, weepy, scaly rash. […] If it is possible to avoid contact with the inciting substance, then the prognosis is extremely good. If the cause of contact dermatitis is not discovered and avoided, then it is likely that it will recur upon the next exposure.

• #2 Allergic Contact Dermatitis > Fact Sheets > Yale Medicine

  https://www.yalemedicine.org/conditions/dermatitis

  Allergic contact dermatitis is best treated by identifying and avoiding the allergen(s) that you are sensitized to. […] For symptom relief, applying a hydrocortisone cream and taking an antihistamine can help stop itching. Your doctor may prescribe topical steroids, and if the condition is widespread and more severe, it can be treated with systemic steroids such as Prednisone, which doctors will sometimes prescribe to ensure that the condition is fully treated. It can take a week to 10 days for the rash to resolve, but patients should experience relief from itchiness shortly after treatment begins. […] Fully evaluating allergic contact dermatitis through patch testing, especially when its recurrent, can provide a patient with substantial quality of life improvements.

• #2 Overview: Allergic contact dermatitis – InformedHealth.org – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK447113/

  Contact allergies cause eczema (dermatitis). The typical symptoms include: swelling, itching, and dry skin. On light skin, you can usually see a reddish rash often without clearly defined edges. On dark skin, the affected area tends to be dark purple to dark gray in color. It is also typical for small bumps (papules) to develop on dark skin. The skin in that area usually becomes thicker and rougher, too. […] In severe allergic reactions, the skin may hurt and feel tight. Blisters might form as well. If the blisters burst, the skin weeps (oozes a fluid), scabs form and then flake off. […] At first, the symptoms affect only the area of the body that comes into contact with the trigger. This is often the hands, particularly the fingers and backs of the hands. Other areas that are often affected include the face (especially the eyelids and lips), the neck, lower legs and feet. The severity of the allergic skin reaction will mainly depend on which substance the skin came into contact with, and for how long.

• #2 Contact Dermatitis Symptoms | Northwestern Medicine

  https://www.nm.org/conditions-and-care-areas/dermatology/contact-dermatitis/symptoms

  Symptoms of contact dermatitis can appear within minutes or as much as 48 hours after contact with an irritant or exposure to an allergen. Symptoms include: Red, inflamed rash […] Blistering […] Oozing and crusting over of the rash […] Itching, sometimes severe […] Tenderness or burning […] Cracked, scaly skin […] Temporary thickening or swelling of the skin. Symptoms of a complication include: White or yellowish discharge from the rash […] Fever […] Rash doesnt heal within three to four weeks […] Nasal congestion, difficulty breathing or other signs of allergic reaction. Always seek emergency medical care if you are having difficulty breathing or suspect an infection.

• #2 Symptoms of Contact Dermatitis | Riviera Allergy Medical Center

  https://rivieraallergy.com/symptoms-of-contact-dermatitis/

  Contact dermatitis symptoms vary greatly and can range from mild to severe enough to interfere with daily life. Here are some telltale signs of contact dermatitis: […] In severe cases, patients may experience swelling of the eyes, lips and face. This can be a life-threatening reaction, so call 911 immediately if you experience swelling of the face or trouble breathing.

• #3 Contact Dermatitis Overview

  https://www.aaaai.org/tools-for-the-public/conditions-library/allergies/contact-dermatitis-overview

  Contact dermatitis (CD) is a common skin problem occurring in 15% to 20% of people. Symptoms are a burning or stinging sensation with redness, swelling or peeling. ACD presents with rash and itch. Acute CD may look red and swollen with small fluid filled bumps (vesicles). Symptoms occur within a few hours of exposure. With chronic exposure the rash appears like eczema and the skin may thicken, scale or crack from scratching. […] The location of the rash depends on the allergen exposure. For instance, the rash associated with nickel allergy is located in areas of contact (underneath the belly button, ear lobes from earrings, around the neck from necklace). The rash from cosmetics is located on the face and particularly the eyelids. […] The diagnosis is made from history (what your doctor learns from talking to you including your hobbies, your work exposures, cosmetic/fragrance/hair dye/nail polish exposures, exposure to jewelry and other metals), physical exam and testing.

• #3 Contact Dermatitis: Causes, Symptoms, Diagnosis | National Eczema Association

  https://nationaleczema.org/eczema/types-of-eczema/contact-dermatitis/

  Contact dermatitis is an itchy, inflammatory skin disease. Symptoms of contact dermatitis include redness, swelling, itching and sometimes blisters. […] Common symptoms of contact dermatitis include: Significant itch in affected areas itch may result in intense scratching that causes skin to bleed, Inflamed skin (which can look pink, red, purple, brown or gray depending on skin tone) that can also be painful to touch, Dry, scaly skin or skin that oozes clear fluid. […] To avoid recurring contact dermatitis symptoms, its critical to identify and avoid contact with the allergen(s) or irritant(s) that triggered your flare as much as possible.

• #3 Contact Dermatitis – Skin Disorders – Merck Manual Consumer Version

  https://www.merckmanuals.com/home/skin-disorders/itching-and-dermatitis/contact-dermatitis

  Contact dermatitis is skin inflammation and rash caused by direct contact with a particular substance. The rash may be itchy, is confined to a specific area, and often has clearly defined boundaries. […] A rash develops and may be itchy, painful, or both. […] Regardless of cause or type, contact dermatitis results in itching and a rash. […] Irritant contact dermatitis causes more pain than itching. The symptoms typically decrease in intensity after 1 or 2 days once there is no more exposure to the irritating substance. […] Allergic contact dermatitis usually causes more itching than pain. Symptoms may take a day or more to become noticeable and increase in intensity for 2 to 3 days after exposure. […] For both, the rash varies from a mild, short-lived redness to severe swelling and large blisters. The rash develops only in areas that come in contact with the substance.

• #3 Allergic contact dermatitis – Wikipedia

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

  The symptoms of allergic contact dermatitis are very similar to the ones caused by irritant contact dermatitis, which makes the first even harder to diagnose. The first sign of allergic contact dermatitis is the presence of the rash or skin lesion at the site of exposure. Depending on the type of allergen causing it, the rash can ooze, drain or crust and it can become raw, scaled or thickened. Also, it is possible that the skin lesion does not take the form of a rash but it may include papules, blisters, vesicles or even a simple red area. The main difference between the rash caused by allergic contact dermatitis and the one caused by irritant contact dermatitis is that the latter tends to be confined to the area where the trigger touched the skin, whereas in allergic contact dermatitis the rash is more likely to be more widespread on the skin. Another characteristic of the allergic contact dermatitis rash is that it usually appears after a day or two after exposure to the allergen, unlike irritant contact dermatitis that appears immediately after the contact with the trigger.

• #3 Overview: Allergic contact dermatitis – InformedHealth.org – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK447113/

  Contact allergies cause eczema (dermatitis). The typical symptoms include: swelling, itching, and dry skin. On light skin, you can usually see a reddish rash often without clearly defined edges. On dark skin, the affected area tends to be dark purple to dark gray in color. It is also typical for small bumps (papules) to develop on dark skin. The skin in that area usually becomes thicker and rougher, too. […] In severe allergic reactions, the skin may hurt and feel tight. Blisters might form as well. If the blisters burst, the skin weeps (oozes a fluid), scabs form and then flake off. […] At first, the symptoms affect only the area of the body that comes into contact with the trigger. This is often the hands, particularly the fingers and backs of the hands. Other areas that are often affected include the face (especially the eyelids and lips), the neck, lower legs and feet. The severity of the allergic skin reaction will mainly depend on which substance the skin came into contact with, and for how long.

• #3 Overview: Allergic contact dermatitis – InformedHealth.org – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK447113/

  In contact allergies, allergic reactions can also later occur in other parts of the body that didnt come into contact with the substance that triggered the allergy. […] Contact allergies usually first arise in adulthood. The symptoms often go away if they are treated and the triggers are avoided. But contact allergies might also develop into chronic contact dermatitis. The skin then becomes thick and hard, with painful cracks.

• #3 Allergic Contact Dermatitis > Fact Sheets > Yale Medicine

  https://www.yalemedicine.org/conditions/dermatitis

  Allergic contact dermatitis is best treated by identifying and avoiding the allergen(s) that you are sensitized to. […] For symptom relief, applying a hydrocortisone cream and taking an antihistamine can help stop itching. Your doctor may prescribe topical steroids, and if the condition is widespread and more severe, it can be treated with systemic steroids such as Prednisone, which doctors will sometimes prescribe to ensure that the condition is fully treated. It can take a week to 10 days for the rash to resolve, but patients should experience relief from itchiness shortly after treatment begins. […] Fully evaluating allergic contact dermatitis through patch testing, especially when its recurrent, can provide a patient with substantial quality of life improvements.

• #3 Contact Dermatitis | ColumbiaDoctors Children’s Health

  https://www.columbiadoctors.org/childrens-health/pediatric-specialties/allergy/treatments-conditions/contact-dermatitis

  Contact dermatitis is a skin condition, often in the form of a rash, hives, or red, itchy bumps, that is caused by contact with something that a child is sensitive or allergic to. […] What are the symptoms of contact dermatitis? […] Red, irritated skin […] Itching […] Swelling […] Bumps or blisters, sometimes filled with clear fluid […] Hot or tender skin […] These symptoms vary from mild to severe, and they may arise anywhere from a few hours to 10 days after coming being exposed to the irritant or allergen. A contact dermatitis rash does not spread.

• #3 Contact Dermatitis: Causes, Symptoms, and Treatment

  https://skinsight.com/skin-conditions/contact-dermatitis/

  Allergic contact dermatitis may occur on any location of the body. […] The affected areas of skin can look different on different body areas and on different people. There is often redness or other skin color changes, and there may be vesicles or bullae (blisters of different sizes), oozing, and crusting. Or there may be scaly plaques (elevated areas larger than a thumbnail). The lesions may have distinct borders with straight edges and sharp angles. In lighter skin colors, the areas are often pink or red, and in darker skin colors, the redness may be harder to see or may look more purple or gray. […] Affected areas are typically severely itchy. […] Eyelid swelling is frequently seen when the allergen is unknowingly transferred from finger to the eyelid. […] When the dermatitis is chronic, the elevated areas can become thickened. Scratching the skin can cause cracks that may become infected with bacteria.

• #3 Allergic Contact Dermatitis: Symptoms, Causes, and Treatment

  https://www.verywellhealth.com/allergic-contact-dermatitis-1069247

  The symptoms of allergic contact dermatitis can include: A raised, red rash […] Symptoms of allergic contact dermatitis can occur within a few hours of coming in contact with an offending substance, or they can arise up to several days later. Symptoms may persist for several weeks, even after the substance has been removed. […] Lichenification can occur in chronic cases of contact dermatitis. Lichenified skin looks thick and leathery. The patches are dry and darker than the surrounding skin. Lichenification develops when an area of skin is repeatedly scratched over a long period of time. […] The elicitation stage occurs in sensitized people who are re-exposed to the antigen. The T lymphocytes in the epidermis once again recognize the antigen as foreign, this time producing inflammatory chemicals designed to eradicate the antigen. […] It is these chemicals that produce the characteristic skin rash. […] Scratching at an allergic contact dermatitis rash can cause the inflammatory chemicals that triggered the rash to spread. As a result, your rash can become more inflamed, irritated, and widespread.

• #3 Diagnosis and Management of Contact Dermatitis | AAFP

  https://www.aafp.org/pubs/afp/issues/2010/0801/p249.html

  The clinical presentation of contact dermatitis varies based on the causative allergen or irritant and the affected area of skin. […] Irritant and allergic contact dermatitis may be complicated by bacterial superinfection, and bacterial culture should be considered with the presence of exudate, weeping, and crusting. […] If allergic contact dermatitis involves an extensive area of skin (greater than 20 percent), systemic steroid therapy is often required and offers relief within 12 to 24 hours.

• #3 Contact Dermatitis – Dermatologic Disorders – Merck Manual Professional Edition

  https://www.merckmanuals.com/professional/dermatologic-disorders/dermatitis/contact-dermatitis

  Because of the time needed to recruit and expand T cells in the epidermis, ACD typically takes 1 day after exposure to become noticeable and 2 to 3 days to become further aggravated (crescendo reaction). In contrast, ICD typically decreases in intensity [decrescendo reaction] after 1 or 2 days. […] Resolution may take up to 3 weeks after discontinuation of exposure. Reactivity is usually lifelong, so identified allergens must be avoided lifelong.

• #3 Contact Dermatitis: Types, Symptoms, Causes, and Treatment – Allergy & Asthma Network

  https://allergyasthmanetwork.org/what-is-eczema/contact-dermatitis/

  Contact dermatitis symptoms typically involve a rash. […] Symptoms of irritant contact dermatitis include: itchy rash, painful skin irritation, swelling, red patches on light skin, brown or purplish patches on dark skin, blisters or pustules, broken blood vessels in the skin, crusty skin, scaly skin, skin breakdown. […] Symptoms of allergic contact dermatitis include: very noticeable itchy rash, red or darkened skin patches, scaly skin, dry skin, leathery skin, cracks in skin, skin shedding. […] Allergic contact dermatitis symptoms often appear in phases instead of all at once. Leathery, cracked, itchy skin is more consistent with allergic reactions.

• #3

  https://www.today.com/health/contact-dermatitis-skin-disorder-information-t188139

  With allergic contact dermatitis, you dont always see symptoms right away. When they develop, you may notice one or more symptoms. […] Symptoms of allergic contact dermatitis may include: Itching, A rash, Dryness, Burning or stinging, Hives, Blisters. […] In rare cases, people can develop a severe allergic reaction. The AAD says you should get medical care immediately if you experience: Difficulty breathing, Swelling in the face or eyes, Confusion. […] Symptoms of irritant contact dermatitis may include: Dry or chapped skin, Itchy, red skin, Cracked, scaly skin, Sores or blisters. […] Subtle redness that develops from contact dermatitis can be harder to detect in people with darker skin tones, said Dr. Laura Ferris, associate professor and director of clinical trials in the dermatology department at the University of Pittsburgh Medical Center and a member of the American Academy of Dermatology. […] Contact dermatitis treatments should lead your rash to clear in one to three weeks, according to the AAD, although if you have your first case of poison ivy, oak or sumac, it could last up to six weeks.

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