Ann Dermatol.  2013 Aug;25(3):365-367. 10.5021/ad.2013.25.3.365.

Acquired Localized Hypertrichosis Induced by Internal Fixation and Plaster Cast Application

• Ma HJ
• Yang Y
• Ma HY
• Jia CY
• Li TH

• KMID: 2265880
• DOI: http://doi.org/10.5021/ad.2013.25.3.365

Abstract

Hypertrichosis refers to increased vellus hair growth and is independent to androgen excess. The acquired localized hypertrichosis (ALH) is one of the typical hypertrichosis, which mainly results from chronic irritation, inflammation, friction, and occlusion by plaster of Paris. Here, we report a young boy who had ALH on his right hand following a closed fracture with internal fixation and plaster cast application. The case is unusual because the hairy area is limited to the operative region of internal fixation. We suggest that the local vascular changes and skin inflammation induced by internal fixation and plaster cast application may be associated with ALH.

Keyword

Casts; Hyperemia; Hypertrichosis; Internal fixators; Localized; Surgical

MeSH Terms

Calcium Sulfate
Casts, Surgical
Fractures, Closed
Friction
Hair
Hand
Hyperemia
Hypertrichosis
Inflammation
Internal Fixators
Skin
Calcium Sulfate

Figure

• 

  Fig. 1 (A) X-ray examination showed that the fractured first metacarpus of right hand was fixed by Kirschner wires. (B) The plaster cast was covered from the wrist to the elbow. (C) Localized hypertrichosis on the right back hand (circle line indicated) after prolonged internal fixation and cast application.

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