This 10-year-old boy was evaluated for a 2 year history of recurrent uniform round 3-4 mm blisters healing with depressed vaccination-like scars on sun exposed areas. The eruption worsened in the summer.. Hidroa vacciniforme is a vesiculobullous eruption that appears on sun-exposed skin during childhood tends to recur in the summer. The lesions are surrounded by an erythematous zone and resemble a smallpox vaccination. Punched out chicken pox or vaccination like scars are characteristic.This rare chronic photodermatosis resolves spontaneously in early adulthood, and is not usually associated with systemic disease.
multiple symmetric crusted 3-4 mm vaccination-like vesicles and scars