pressure alopecia

pres·sure al·o·pe·ci·a

loss of hair over a circumscribed area usually on the posterior scalp, resulting from the continuous pressure on the occiput in a lengthy operative procedure, or unconsciousness following a drug overdose.

pres·sure al·o·pe·ci·a

(presh'ŭr al'ō-pē'shē-ă)
Loss of hair over a circumscribed area, usually on the posterior scalp, resulting from the continuous pressure on the occiput in a lengthy operative procedure, or unconsciousness following a drug overdose.
References in periodicals archive ?
Postoperative or Pressure Alopecia (PA) is the term used to describe a set of scars and alopecia that occur after ischemic changes in the scalp.