Photodermatoses are skin disorders which result from abnormal response to ultraviolet (UV) radiation. Photodermatoses include the following disorders: polymorphic light eruption, hydroa vacciniforme, solar urticaria, actinic prurigo, acute actinic dermatosis, solar dermatosis, phototoxic dermatitis and photoallergic dermatitis. The histopathology of these disorders will be presented and its role in making the diagnosis will be discussed.