Abnormality of skin morphology
Keratosis pilaris
2018-12-02T13:20:11Z
peter
Follicular plugging
Follicular keratotic plug
HP:0040180
Follicular keratosis
An anomaly of the hair follicles of the skin that typically presents as small, rough, brown folliculocentric papules distributed over characteristic areas of the skin, particularly the outer-upper arms and thighs.
Chicken skin
Keratosis pilaris is characterized by abnormal keratinisation of the lining of the follicular infundibulum (the upper portion of the hair follicle). Keratin (i.e., scale) fills the follicle instead of exfoliating. Clinically, the keratotic plugs have been referred to as the carpet tack sign since they project up similar to carpet tacks.
Carpet tack sign
Lichen pilaris
Hyperkeratosis pilaris