Hair follicle nevus
(Redirected from Vellus hamartoma)
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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[edit | edit source]
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[edit | edit source]
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[edit | edit source]
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[edit | edit source]
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[edit | edit source]
The prognosis for individuals with hair follicle nevi is excellent, as these lesions are benign and do not pose any health risks.
See also[edit | edit source]
References[edit | edit source]
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