Skin-nontumor / Clinical Dermatology

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Skin-nontumor / Clinical Dermatology

Other dermatoses

Alopecia

Reviewer: Mowafak Hamodat, MB.CH.B, MSc., FRCPC, Eastern Health, St. Johns, Canada (see Reviewers page)
Revised: 16 July 2011, last major update July 2011
Copyright: (c) 2002-2011, PathologyOutlines.com, Inc.

General
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● Hair loss from head or body
● Causes include baldness (pattern alopecia or androgenic alopecia), chemotherapy, hairstyling or hair drying, trichotillomania (compulsive pulling of hair) or other medical disorders
● Adequate tissue sampling and appropriate laboratory processing, in combination with clinical information, provide the key to diagnosis (Histopathology 2010;56:24)
● Alopecia areata: sudden hair loss causing patches to appear on scalp or elsewhere
● Folliculitis decalvans: alopecia that involves scarring; redness, swelling and pustules around hair follicle, with subsequent follicular destruction and permanent hair loss

Clinical images
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Alopecia areata

Folliculitis decalvans

Micro images
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Alopecia areata

Folliculitis decalvans: contributed by Angel Fernandez-Flores, MD, PhD, Hospital El Bierzo and Clinica Ponferrada, Spain:

End of Skin-nontumor / Clinical Dermatology > Other dermatoses > Alopecia

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