ALOPECIA-ASSOCIATED PSEUDOCYST OF THE SCALP
By Gary M. White, MD
Alopecia overlying a soft nodule.
Alopecia-associated pseudocyst of the scalp is akin to cystic acne of the scalp that causes temporary alopecia.
- Progression to dissecting cellulitis has been observed and indeed, this may be precursor to that condition.
- Young, adult males are most commonly affected.
The acute onset of one or two inflammatory cysts on the scalp, usually on the vertex, in a young adult male is characteristic. The size is typically 2-4 cm. The hair overlying is lost. Cultures are sterile [JAAD Sept 2012].
IL Kenalog 2.5 mg/cc monthly x 1-2 treatments should be performed. It may be helpful to start an acne antibiotic, e.g., doxycycline, minocycline. The hair usually regrows. In recurrent and/or resistant cases, isotretinoin may be needed. For persistent or chronic lesions, see dissecting cellulitis.
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