A 12 year old boy after spending his holiday in a Kovalam beach develops pruritic haemorrhagic vesicles on cheeks, ears, nose and hands after 12 hours. A week later the lesions crusted and healed with permanent scars. What is the most probable diagnosis?
All these are acquired autoimmune photodermatoses of which hydroa vacciniforme presents typically in the 1st decade of life with haemmorhagic vesicles healing with scars. Ref: Rook's Textbook of Dermatology, 8th Edition, Page 29.15
Polymorphic light eruption
Hydroa vacciniforme
Actinic prurigo
Persistent light reaction