Focal hair loss




14: Focal hair loss


Abstract:



Hair loss is divided into focal hair loss and diffuse hair loss. This chapter reviews common causes of focal hair loss, including alopecia areata, trichotillomania, discoid lupus, traction alopecia, and central centrifugal cicatricial alopecia.

Key terms:


alopecia areata


trichotillomania


discoid lupus


traction alopecia


central centrifugal cicatricial alopecia


folliculitis decalvans



Alopecia areata


Rana Abdat


Clinical features


Alopecia areata (AA) is a common cause of hair loss that affects men and women equally and can affect patients of all ages.






Differential diagnosis


The differential for AA includes tinea capitis, AGA, trichotillomania, TE, anagen effluvium, and psychogenic pseudoeffluvium.




Work-up


Work-up for AA is divided into history taking, clinical examination, and laboratory work-up.


History taking



Jul 22, 2021 | Posted by in Dermatology | Comments Off on Focal hair loss
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