Chronic acneiform eruption with crateriform scars. Acne necrotica (varioliformis) (necrotizing lymphocytic folliculitis)

Acne Necrotica in a Woman With Systemic Lupus Erythematosus and Systemic Sclerosis

“…Acne necrotica is an inflammatory disorder of unknown etiology centered on the hair follicle that results in necrosis of the follicular epithelium and adjacent skin. It is also known as necrotizing lymphocytic folliculitis because of the histopathological findings of early lesions [1]. It represents approximately 1% of all biopsies of cicatricial alopecias [2].…”

Acne necrotica (necrotizing lymphocytic folliculitis): An enigmatic and under‐recognised dermatosis

“…Acne necrotica is a clinically diverse disorder in which recurring crops of pruritic, painful or tender follicular papulonodules proceed through a number of clinico‐pathological stages before resolution, with varying degrees of scarring. Pathologically early lesions are characterised by a necrotising lymphocytic folliculitis .…”

Story of a Scalp Studded with (Crateriform) Scars

“…It is characterized by recurrent crops of tender papules and papulonodules, which rapidly necrotize to leave behind superficial varioliform scars of variable degrees. The lesions are generally limited to nose, forehead, and anterior scalp, although anterior chest and interscapular areas can also be involved in severe cases [3,4]. It has been proposed that acne necrotica varioliformis represents acquired sensitivity to staphylococcal toxin, with the subsequent formation of necrotic plugs and scars, but recent work in this field is lacking [5].…”