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Contact dermatitis is a type of acute or chronic inflammation of the skin caused by exposure to chemical or physical agents. [1] Symptoms of contact dermatitis can include itchy or dry skin, a red rash, bumps, blisters, or swelling. These rashes are not contagious or life-threatening, but can be very uncomfortable.
Allergic contact dermatitis (ACD) is a form of contact dermatitis that is the manifestation of an allergic response caused by contact with a substance; the other type being irritant contact dermatitis (ICD). Although less common than ICD, ACD is accepted to be the most prevalent form of immunotoxicity found in humans. [1]
Other symptoms to note: Contact dermatitis appears following exposure to an irritant or allergen, and it’s the most common rash caused by external factors, Dr. Zeichner says. (This can include ...
Contact dermatitis is typically treated by avoiding the allergen or irritant. [9] [10] Antihistamines may help with sleep and decrease nighttime scratching. [2] Dermatitis was estimated to affect 245 million people globally in 2015, [6] or 3.34% of the world population. Atopic dermatitis is the most common type and generally starts in childhood.
Irritant contact dermatitis is caused by the eyelid coming into direct contact with a substance that damages the outer layer of the skin, such as certain types of makeup, soaps, and detergents. Other forms of dermatitis on the eyelids include atopic dermatitis is a form of eczema that can affect the eyelids, and seborrheic dermatitis which is a ...
The North American Contact Dermatitis Group (NACDG) patch tested 5,085 adults, presenting with eczema-like symptoms, showing 19.5% had a positive reaction to nickel. [35] Nickel allergy is also more prevalent in women (17.1%) than men (3%), possibly due to cultural norms related to jewelry and ear piercings and therefore increased exposure to ...
The response to the antigen occurs in two stages: the sensitization and the effect stage. In the "sensitization" stage, the host experiences an asymptomatic contact with the antigen. Subsequently, in the "effect" period, the pre-sensitized host is re-introduced to the antigen, which then leads to a type I anaphylactic or atopic immune response ...
As it is often the result of scratches, involving contact with other materials, it can be confused with an allergic reaction, when in fact it is the act of being scratched that causes a wheal to appear. These wheals are a subset of urticaria (hives), and appear within minutes, in some cases accompanied by itching. The first outbreak of ...
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