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Acquired progressive kinking of hair - Hair and Scalp
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Acquired progressive kinking of hair - Hair and Scalp

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Contributors: Mary Gail Mercurio MD, Jeffrey D. Bernhard MD, Lowell A. Goldsmith MD, MPH
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Synopsis

Acquired progressive kinking of the hair (APKH) is a rare disorder characterized by hair in one or more regions of the scalp undergoing a progressive textural change, becoming dry, lusterless, wiry, and kinky. This is accompanied by a decreased rate of growth and darkening of the color. The boundaries between normal and abnormal hair are not sharply defined. APKH is more common in males and, in some of the cases described, has preceded development of male pattern alopecia.

Codes

ICD10CM:
L67.8 – Other hair color and hair shaft abnormalities

SNOMEDCT:
77039003 – Acquired progressive kinking of hair

Look For

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Diagnostic Pearls

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Differential Diagnosis & Pitfalls

  • Therapy-induced kinking of hair – rarely described in patients receiving etretinate
  • Whisker hair – considered by some to be a variant of APKH; the same textural change is symmetrically localized to the area around the ears 
  • Woolly hair nevus – onset usually occurs at or soon after birth

Best Tests

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Management Pearls

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Therapy

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References

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Last Updated: 01/20/2015
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Acquired progressive kinking of hair - Hair and Scalp
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Acquired progressive kinking of hair : Twisting hairs
Clinical image of Acquired progressive kinking of hair
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