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.
Heterogeneity means the the texture of the thyroid gland isn't uniform and smooth as seen with a healthy thyroid gland. This texture is spread over the thyroid gland (diffuse). A diffusely heterogeneous thyroid is commonly seen with an autoimmune disease called Hashimoto's thyroiditis.ight lobe of the thyroid gland measures 5.6 x 1.0 x 2.1 cm. Left thyroid lobe measures 5.2 x 2.1 x 2.0cm. Previous study measurements were right 4.2 x 2 x 6 x 2.0 cm and left 5.6 x 2.9 x. 2.2 cm. There is marked heterogeneity in echotexture in both lobes.