al·o·pe·cia /ˌæləˈpiʃ(i)ə/
  禿頭症
  al·o·pe·cia /ˌæləˈpɪʃ(ɪ)ə/ 名詞
  禿頂,禿頭,脫毛症,禿髮症
  Al·o·pe·ci·a A·lop·e·cy n.  Med. Loss of the hair; baldness.
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  alopecia
       n : loss of hair (especially on the head) or loss of wool or
           feathers; in humans it can result from heredity or
           hormonal imbalance or certain diseases or drugs and
           treatments (chemotherapy for cancer)