This is an automatically translated article.
The article was professionally consulted by Specialist Doctor I Le Thi Thu Hang - Dermatologist, Department of Medical Examination & Internal Medicine - Vinmec Hai Phong International General Hospital. The doctor has over 12 years of experience in the field of dermatology.Allergic contact dermatitis is a common and common disease. So what is the cause of contact dermatitis, what are the symptoms of allergic contact dermatitis?
1. What is the cause of contact dermatitis?
Contact dermatitis is divided into three types, which are allergic contact dermatitis, irritant contact dermatitis, and photoallergic contact dermatitis.
1.1 Allergic contact dermatitis
Allergic contact dermatitis is a skin condition that develops an allergic reaction after coming into contact with a foreign substance. Allergic reactions cause the body to release inflammatory chemicals, causing the skin to become inflamed and itchy.Allergic contact dermatitis is usually caused by the following:
Wearing jewelry or gold containing nickel Use rubber gloves Use perfumes, cosmetics or skin care products that contain chemicals allergenic...
1.2 Irritant contact dermatitis
Irritant contact dermatitis is the most common form of contact dermatitis, which occurs when the skin comes into contact with a toxic substance. Toxic substances that cause irritant contact dermatitis include:Acids contained in batteries Detergents Detergents, drains, and drains cleaners Kerosene, kerosene Detergents
Viêm da tiếp xúc kích ứng do chất tẩy rửa
1.3 Allergic contact dermatitis to sunlight
Unlike the two types of contact dermatitis mentioned above, atopic dermatitis caused by sun exposure is very rare. The disease can manifest as acute or chronic, due to overexposure or over-sensitivity to sunlight or other sources of light, or due to the use of drugs that increase sensitivity to sunlight...2. Symptoms of allergic contact dermatitis
Depending on the cause and sensitivity to allergens, allergic contact dermatitis symptoms will vary, including some of the following:Peeling, scaly, dry skin Rash on the skin Dry or oozing blistering skin Red, dark skin Burns with or without pain accompanied by severe itching and discomfort, this allergic contact dermatitis symptom appears from 24 to 36 hours after exposure Sensitivity to the sun Swollen skin, especially in the eye, face or groin area. For irritant contact dermatitis, it can cause some mild symptoms such as:
Blistering skin Dry skin causing cracking Swelling on the skin Skin feeling hard or tight Ulcers, open sores forming layers shell With the cause of contact dermatitis is caused by insects, the initial symptom is only the appearance of one or a few red and long, slightly edematous patches of skin, ranging in size from a few mm to several centimeters. After a few hours to a day, blisters or blisters in the middle appear red. The specific lesions of contact dermatitis due to insects are long streaks, punctate markings. If mild, the patient will only feel burning and itching, on the skin a few red spots with small blisters and pustules. After about 3-5 days, the affected area will be dry without blistering or blistering. If it is more severe, there is blistering or spreading pus, maybe even ulceration, necrosis.
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