Causes
Acne Keloidalis Nuchae
Diagnosis
Treatment
Theories on the Cause
The exact cause of folliculitis keloidalis is not fully understood. Some researchers suggest that it may begin with an injury during a close haircut or the use of a razor. This is thought to be a mechanical form of folliculitis, where ingrown hair shafts irritate the wall of the hair follicle, leading to inflammation, follicle destruction, and scarring. Others argue that it may be a primary skin disease unrelated to ingrown hairs or bacterial infection. Additionally, an association with obesity and metabolic syndrome has been observed in some patients.
Acne Keloidalis Nuchae (AKN)
Acne keloidalis nuchae (AKN) is a specific type of folliculitis that involves inflammation of the hair follicles on the neck and the back of the scalp. It manifests as red patches, papules, plaques, pustules, infections, scarring, and hair loss. AKN is most commonly seen in men with curly hair.
Potential Triggers
The precise cause of AKN remains unclear, but several factors are believed to contribute:
- Skin Injury: Irritation from helmets, tight collars, or close shaves.
- Immune Reactions: Immune responses in the cells of hair follicles.
- Hormonal Factors: Extra androgen hormones or sensitivity to androgens.
