Source:http://linkedlifedata.com/resource/umls/id/C0411280
NCI: Small parasitic insects that can cause a itching red rash to the skin of the waist, shoulders, armpits, neck and pubic area. Commonly spread from person-to-person via close contact. The eggs (nits) of head lice can be mistaken for dandruff, but they are adherent to the hair shafts. (On-line Medical Dictionary)