Itching, flaking, or crusting of the scalp may be caused by: 1  Cradle cap, an oily, yellow crusting on a baby's scalp. 2  Dandruff, a shedding of the skin on the scalp that leaves white flakes on the head, neck, and shoulders. 3  Head lice, tiny wingless insects that cause itching and raw patches on the scalp. Head lice are most common in school-age children. Ringworm, a fungal infection of the outer layer of the scalp and in the hair. It usually causes a rash made up of circular patches with raised, red edges that resemble worms.
heteronymous hemianopia. Also found in: Dictionary, Thesaurus. Related to heteronymous hemianopia: bitemporal hemianopsia. hetÂ·erÂ·onÂ·yÂ·mous hemÂ·iÂ·anÂ·oÂ·piÂ·a. attitudinal hemianopia involving the upper field of one eye and the lower field of the other; or a binasal or bitemporal hemianopia.
Hemotoxin (hemo-toxin) - a toxin that destroys red blood cells by inducing hemolysis. 1  Biology Prefixes and Suffixes: -stasis. 2  Biology Prefixes and Suffixes: erythr- or erythro-. 3  Biology Prefixes and Suffixes: -lysis. 4  Study the Biology Prefixes and Suffixes: Cyto- and -Cyte. 5  Biology Prefixes and Suffixes: angio-.