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PRIMARY
| • | Jadassohn type – preceded by inflammation |
| • | Schweninger-Buzzi type – in which the lesions appear without preceding inflammation |
| • | both exhibit identical course and prognosis |
mnemonic – Jadassohn = one word (inflammation); Schweninger-Buzzi = two words (no inflammation)
SECONDARY
| • | seen in – sarcoid, GA, Hansen’s, secondary syphilis, or penicillamine therapy |
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