Source:http://linkedlifedata.com/resource/umls/id/C0031924
MSH: Involuntary erection or bristling of hairs.,GO: The reflex process in which the arrectores pilorum (hair follicle) muscles contract and cause the hair to stand erect. [GOC:BHF, http://en.wikipedia.org/wiki/Pilomotor_reflex, PMID:21335239]