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.
Hypocomplementemic urticarial vasculitis: A rare condition characterized by the presence of recurring urticarial vasculitis, arthralgia or arthritis and hypocomplementemia. Hypocomplementemia involves a reduction or absence of blood complement which is a part of the body's immune system which destroying invading bacteria or other pathogens. More detailed information about the symptoms, causes, and treatments of Hypocomplementemic urticarial vasculitis is available below. Symptoms of Hypocomplementemic urticarial vasculitis Click to Check