| • | recurring crops of papulovesicles resolve with pock-like scarring |
| • | might represent a “scarring” variant of PMLE |
| • | boys; usually only during summer months; resolves in adolescence (like actinic prurigo) |
| • | hydroa estivale = mild form with little scarring |
| • | treatment: beta-carotene, anti-malarials |
| • | ddx: often misdiagnosed as HSV, because they present with vesicles after a day at the beach; EPP (scars), check plasma protoporphyrins |
summary:
| • | actinic prurigo (eczematous) (girls); probably an “excoriated” variant of PMLE |
| • | hydroa vacciniforme (papulovesicular) (boys); might represent a “scarring” variant of PMLE |
histology:
| • | distinctive: intraepidermal blister; focal epidermal keratinocyte necrosis and spongiosis with perivascular neutrophils and lymphocytic infiltrate |
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