Blisters occur in sun-exposed areas such as the face and neck and the dorsa of the hands and forearms.

Clinical features: blistering in sun-exposed areas, facial hypertrichosis, hyperpigmentation, and sclerodermoid changes.

The classic representation, with erosions, vesicles, and bullae localized to the backs of hands.

Blisters formed on a non-inflamed base following sun exposure. The blisters have healed with the formation of milia.