Hair follicle nevus

Hair follicle nevus
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A hair follicle nevus is a type of skin lesion that is characterized by a small, benign growth associated with a hair follicle. These nevi are typically found on the scalp or other hair-bearing areas of the body.

Presentation

Hair follicle nevi usually present as small, flesh-colored or slightly pigmented papules. They are often asymptomatic and are discovered incidentally during a dermatological examination.

Pathophysiology

The exact cause of hair follicle nevi is not well understood, but they are thought to arise from a localized proliferation of follicular cells. Unlike other types of nevi, hair follicle nevi are not associated with an increased risk of malignant transformation.

Diagnosis

Diagnosis of a hair follicle nevus is typically made based on clinical appearance. In some cases, a skin biopsy may be performed to confirm the diagnosis and rule out other conditions such as basal cell carcinoma or trichoepithelioma.

Treatment

Treatment is generally not necessary for hair follicle nevi unless they become symptomatic or for cosmetic reasons. If removal is desired, options include surgical excision or laser therapy.

Prognosis

The prognosis for individuals with hair follicle nevi is excellent, as these lesions are benign and do not pose any health risks.

See also

• Nevus
• Dermatology
• Skin lesion