Contact dermatitis

Definition

Contact dermatitis is an inflammatory skin condition caused by direct contact with an allergen or irritant. It results in red, itchy, and sometimes painful rash.

5 Must Know Facts For Your Next Test

1. There are two main types: allergic contact dermatitis and irritant contact dermatitis.
2. Common allergens include nickel, fragrances, and certain plant oils like poison ivy.
3. Irritant contact dermatitis can occur after exposure to substances like detergents, acids, or solvents.
4. Diagnosis often involves patch testing to identify specific allergens responsible for the reaction.
5. Treatment focuses on avoiding the offending substance and using topical corticosteroids to reduce inflammation.

Review Questions

• What are the primary differences between allergic contact dermatitis and irritant contact dermatitis?
• How is contact dermatitis typically diagnosed?
• What are common treatments for managing symptoms of contact dermatitis?

Related terms

Hypersensitivity: An exaggerated immune response to a foreign substance.

Atopic Dermatitis: A chronic skin condition characterized by itchy and inflamed patches of skin.

Patch Testing: A diagnostic method used to identify specific allergens causing contact dermatitis.