<unk>  is a chronic necrotizing lymphocytic folliculitis characterized by umbilicated, erythematous papules that are 2–5 mm in diameter. The lesions may evolve rapidly into adherent hemorrhagic crusts and leave a permanent varioliform scar affecting areas close to the scalp margins (termed<unk>  varioliformis"). A milder disease, synonymous with Propionibacterium<unk> s folliculitis of the scalp, is featured by smaller, more numerous and itchy vesicopustular lesions distributed throughout the scalp without significant scarring (termed<unk>  miliaris").
Acne necrotica
Poikiloderma of civatte
Granuloma faciale
Folliculitis decalvans
Ichthyosis bullosa of Siemens
Chondrodermatitis nodularis chronica helicis
Granulosis rubra nasi
Byssinosis