Contact dermatitis often occurs in relation to a chemical burn or irritant, but it can occur for other reasons. Learn about the triggers and treatments for the condition.

People often develop allergic contact dermatitis a day or two after their skin comes into contact with an allergen. People with photoallergic contact dermatitis, or photocontact dermatitis ...

Civatte first described the condition in 1923. [6] We propose that photoallergic contact dermatitis from 6-methylcoumarin may have played a role in producing poikiloderma of Civatte in this patient.

The patch-test result was negative, but the photopatch-test result showed photoallergic contact dermatitis from 6-methylcoumarin (++ reaction) and usnic acid (+ reaction) on the irradiated side ...

Plus, a small number of people experience photoallergic contact dermatitis, a skin reaction that occurs when the sun activates an ingredient found in sunscreen, perfume, or medication. [ 1 ] ...