What are the 2 types of contact dermatitis?

Contact dermatitis is a common inflammatory skin condition characterized by erythematous and pruritic skin lesions that occur after contact with a foreign substance. There are two forms of contact dermatitis: irritant and allergic.

What is the most common type of contact dermatitis?

Irritant contact dermatitis is the most common type. This nonallergic skin reaction occurs when a substance damages your skin’s outer protective layer. Some people react to strong irritants after a single exposure.

What is the difference between allergic contact dermatitis and irritant contact dermatitis?

Irritant CD is a nonspecific skin response to direct chemical skin damage and/with releasing inflammatory mediators, while allergic CD is a delayed hypersensitivity reaction (type IV) to allergens, which includes immune responses (due to the interaction of T cells and cytokines) (1).

What are the most common causes of contact dermatitis?

In the irritant type of contact dermatitis, the most frequent triggers are chemicals such as in soaps, bleach, dyes, and solvents. In allergic contact dermatitis, common allergens include nickel, adhesives, plants, cosmetics, and topical medications.

What is another name for contact dermatitis?

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).

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Do antihistamines work for contact dermatitis?

Oral antihistamines may help diminish pruritus caused by allergic contact dermatitis.

Where on the body does irritant contact dermatitis most frequently start?

The hands and feet are commonly affected but ICD can occur on the face or elsewhere on the body. If the chemical is in contact with a large area of skin the rash may be extensive. Contact with strong chemicals such as some acids or alkalis, may cause a rash or chemical burn to appear quickly.

What cream is best for contact dermatitis?

Topical corticosteroids (also known as steroid creams) are typically the first-line treatment for contact dermatitis. 9 Hydrocortisone (in stronger formulation than OTC options), triamcinolone, and clobetasol are commonly prescribed. These can help reduce itching and irritation, and they work rather quickly.

What layer of the skin does contact dermatitis affect?

Signs and symptoms

Inflammation of the affected tissue is present in the epidermis (the outermost layer of skin) and the outer dermis (the layer beneath the epidermis). Contact dermatitis results in large, burning, and itchy rashes. These can take anywhere from several days to weeks to heal.

Is dermatitis caused by stress?

Anxiety and stress are common triggers that cause eczema to flare up, which then creates more anxiety and stress, which then leads to more eczema flare-ups.

What do dermatitis look like?

Psoriasis and dermatitis – especially seborrheic dermatitis – can look similar. Both look like patches of red skin with flakes of skin on top of and around the redness. However, in psoriasis, the scales are often thicker and the edges of those scales are well-defined.

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