Photocontact dermatitis can occur in two types — phototoxic contact dermatitis and photoallergic contact dermatitis — depending on whether a immunological reaction is present. The rash and ...

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.

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 ...

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 ... ingredients such as avobenzone, oxybenzone, octocrylene, homosalate, octisalate, and octinoxate.