pityriasis lichenoides et varioliformis acuta

noun
pityriasis li·che·noi·des et var·i·o·li·for·mis acu·ta | \-ˌlī-kə-ˈnȯi-ˌdēz-et-ˌvar-ē-ˌō-lə-ˈfȯr-məs-ə-ˈk(y)üt-ə \

Medical Definition of pityriasis lichenoides et varioliformis acuta 

: a disease of unknown cause that is characterized by the sudden appearance of polymorphous lesions (as papules, purpuric vesicles, crusts, or ulcerations) resembling chicken pox but tending to persist from a month to as long as years, occurs especially between the ages of 30 and 50, and is more common in men

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