<unk>  presents with a primary lesion that is a pruritic or painful erythematous follicular-based papule that develops central necrosis and crusting and heals with a varioliform scar.
Acne necrotica
Dermatitis repens
Shiitake mushroom dermatitis
Acne medicamentosa
Granuloma faciale
Folliculitis decalvans
Ichthyosis bullosa of Siemens
Chondrodermatitis nodularis chronica helicis