has part has part characteristic of part of inheres in part of has modifier Abnormality of the hairline 2009-01-21T05:19:14Z HP:0009553 The hairline refers to the outline of hair of the head. An abnormality of the hairline can refer to an unusually low or high border between areas of the scalp with and without hair or to abnormal projections of scalp hair. UMLS:C4024297 Abnormality of the hairline Congenital abnormal hair pattern Abnormality of the scalp hair quality abnormal hairline