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Pressure alopecia - Hair and Scalp
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Pressure alopecia - Hair and Scalp

See also in: Overview
Contributors: Vivian Wong MD, PhD, Susan Burgin MD
Other Resources UpToDate PubMed

Synopsis

Pressure-induced alopecia (PIA) refers to hair loss induced by localized pressure on the scalp due to prolonged immobilization. It is thought to arise from localized tissue hypoxia leading to cessation of hair follicle activity. This results in a focal area of hair loss occurring several days to weeks after the initial trigger. The alopecia may be nonscarring (if diagnosed early) or scarring (if diagnosis is delayed). Any age group may be affected, including neonates and children.

Predisposing factors associated with PIA include postoperative stays, prolonged hospital stays, orthodontic headgear, surgical head and neck positioners, cervical collars, electroencephalogram monitoring, and recreational activity associated with a fixed posture. Other associations include long durations of immobilization, obesity, female sex, psychiatric or cardiovascular comorbidities, use of the Trendelenburg position, and intraoperative hypoperfusion / hypoxemia.

Codes

ICD10CM:
L65.9 – Nonscarring hair loss, unspecified

SNOMEDCT:
56317004 – Alopecia

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Last Reviewed:10/22/2019
Last Updated:10/22/2019
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Pressure alopecia - Hair and Scalp
See also in: Overview
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Pressure alopecia : Crust, Erythema, Occipital scalp, Immobilized patient
Copyright © 2021 VisualDx®. All rights reserved.