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Folliculitis decalvans - Hair and Scalp
Other Resources UpToDate PubMed

Folliculitis decalvans - Hair and Scalp

Contributors: Vivian Wong MD, PhD, Mary Gail Mercurio MD, Susan Burgin MD
Other Resources UpToDate PubMed

Synopsis

Folliculitis decalvans is a common form of scarring alopecia characterized by suppurative folliculitis with destruction of the hair follicle. It most commonly occurs in middle-aged adults of both sexes but can arise any time after the onset of puberty. The crown is the most frequently affected area. Staphylococcus aureus is often isolated from the follicular pustules, and it is thought that an abnormal host response occurs to this organism.

Codes

ICD10CM:
L66.2 – Folliculitis decalvans

SNOMEDCT:
53593008 – Folliculitis decalvans

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Diagnostic Pearls

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Differential Diagnosis & Pitfalls

  • Acne necrotica
  • Folliculitis
  • Tinea capitis
  • Kerion
  • Lichen planopilaris
  • Discoid lupus erythematosus
  • Dissecting cellulitis of scalp
  • Amicrobial pustulosis of the folds
  • Erosive pustular dermatosis

Best Tests

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Therapy

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References

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Last Reviewed:08/09/2022
Last Updated:08/10/2022
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Patient Information for Folliculitis decalvans - Hair and Scalp
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Contributors: Nour Mhaimeed, Peterson Pierre MD
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Folliculitis decalvans - Hair and Scalp
A medical illustration showing key findings of Folliculitis decalvans : Occipital scalp, Vertex scalp, Focal scarring alopecia
Clinical image of Folliculitis decalvans - imageId=2544397. Click to open in gallery.  caption: 'Perifollicular papules and crusting with associated surrounding scarring alopecia on the scalp.'
Perifollicular papules and crusting with associated surrounding scarring alopecia on the scalp.
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