Pseudofolliculitis capitis

Abstract

Pseudofolliculitis of the bearded area is a common dermatoses among black men. Acne keloidalis probably represents this same condition, but is located in the nape area. Pseudofolliculitis of the pubic area (pseudofolliculitis pubis) has been reported. We wish to report pseudofolliculitis including the entire scalp and to add the term pseudofolliculitis capitis for this heretofore unreported entity.

The Surgical Management of Extensive Cases of Acne Keloidalis Nuchae

“…5,9 Close shaving of the neck in conjunction with the curved, coarse type of hair that is typically present in black patients has been proposed as an etiologic factor. 10,11 Constant rubbing of the neck and posterior region of the scalp by collars may also exacerbate AKN. 8,[11][12][13] The late lesions of AKN, with draining sinuses and large, keloidal masses, are often refractory to treatment, including therapy with topical and intralesional steroids, 5,8,12 topical and oral antibiotics, retinoids, 10,16 and irradiation.…”

“…10,11 Constant rubbing of the neck and posterior region of the scalp by collars may also exacerbate AKN. 8,[11][12][13] The late lesions of AKN, with draining sinuses and large, keloidal masses, are often refractory to treatment, including therapy with topical and intralesional steroids, 5,8,12 topical and oral antibiotics, retinoids, 10,16 and irradiation. 5,6,10,14,17 Surgical approaches to late-stage AKN include epilation, 5,8,12,14 excision with second-intention healing, 10,13,16 excision with primary closure, 5,14,16,18 and excision with grafting.…”

An Unusual Ala12Thr Polymorphism in the 1A α-Helical Segment of the Companion Layer-Specific Keratin K6hf: Evidence for a Risk Factor in the Etiology of the Common Hair Disorder Pseudofolliculitis Barbae

“…Cephalic directed hair patterns or those in whorls or small eddies have been found to initiate localized PFB after shaving (Pinkus, 1927;Ross et al, 1993). PFB reactions after regular shaving have, however, also been noted in the scalp of black males, the axillary and pubic skin region, and on the legs of black and Asian women as well as on the face of women suffering from hirsutism (Alexander, 1974;Dilaimy, 1974;Smith and Odom, 1977;Garcia and White, 1978;Hage and Bouman, 1991;Crutchfield, 1998). The present investigation demonstrates a disruptive Ala12Thr substitution, which occurs as a single nucleotide polymorphism in the 1A a-helical subdomain of the hair follicle companion layer-specific keratin K6hf , and its role as an additional genetic risk factor for the development of PFB.…”

Acne Keloidalis Is a Form of Primary Scarring Alopecia

“…Thus far, none of these theories has been proven, and all are based on circumstantial evidence. The notion that lesions of AK are caused by ingrowing hairs, 13 analogous to the situation in pseudofolliculitis barbae, 14 persists, despite the fact that there is no evidence to support this hypothesis. 3 There is considerable evidence to the contrary, 15 and our findings conclusively separate the pathogenic mechanisms of AK and pseudofolliculitis barbae.…”