Hair follicle nevus is a cutaneous condition that presents as a small
papule
A papule is a small, well-defined bump in the skin. It may have a rounded, pointed or flat top, and may have a dip. It can appear with a stalk, be thread-like or look warty. It can be soft or firm and its surface may be rough or smooth. Some h ...
from which fine hairs protrude evenly from the surface.
Signs and symptoms
Hair follicle nevus usually presents as a single, skin-colored
papule
A papule is a small, well-defined bump in the skin. It may have a rounded, pointed or flat top, and may have a dip. It can appear with a stalk, be thread-like or look warty. It can be soft or firm and its surface may be rough or smooth. Some h ...
or
nodule on the face after birth that exhibit no symptoms.
Diagnosis
Histologically, vellus hair follicle growth with perifollicular fibrous thickening occasionally encircled by a cellular stroma is the hallmark of hair follicle nevus. Smooth muscle fibers and eccrine and sebaceous glands are at times visible.
See also
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Skin lesion
A skin condition, also known as cutaneous condition, is any medical condition that affects the integumentary system—the organ system that encloses the body and includes skin, nails, and related muscle and glands. The major function of th ...
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List of cutaneous conditions
References
Further reading
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External links
VisualDx
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Conditions of the skin appendages
Human hair
Hair diseases