<unk> , sometimes referred to as sun poisoning or photoallergy, is a form of allergic contact dermatitis in which the allergen must be activated by light to sensitize the allergic response, and to cause a rash or other systemic effects on subsequent exposure. The second and subsequent exposures produce photoallergic skin conditions which are often eczematous. It is distinct from sunburn.
Photodermatitis
Pellagra
Photokeratitis
Dermatitis
Pathergy
Photosensitivity
Sunburn
Acrodermatitis