| arsenical | 1. <pharmacology> A drug or agent, the effect of which depends on its arsenic content. 2. Denoting or containing arsenic. (05 Mar 2000) |
|---|---|
| arsenical keratosis | Multiple keratoses, most commonly of the palms and soles but also of the fingers and proximal portions of the extremities, resulting from long-term arsenic ingestion; they resemble Bowen's disease microscopically and may become malignant. (05 Mar 2000) |
| arsenical polyneuropathy | An axon loss polyneuropathy that results from subacute or chronic arsenic poisoning; almost always preceded by gastrointestinal symptoms; one of the heavy metal neuropathies. (05 Mar 2000) |
| arsenical tremor | A tremor caused by chronic poisoning by arsenic. (05 Mar 2000) |
| melanosis | A disorder caused by a disturbance in melanin pigmentation, melanism. (18 Nov 1997) |
| melanosis circumscripta precancerosa | An obsolete term for lentigo maligna. (05 Mar 2000) |
| melanosis coli | Melanosis of the large intestinal mucosa due to accumulation of pigment of uncertain composition within macrophages in the lamina propria. (05 Mar 2000) |
| melanosis corii degenerativa | A congenital abnormality in which pigment is deposited in whorls and streaks; vesicles occasionally occur, and it may be associated with cardiac or neurologic disorders. Compare: incontinentia pigmenti, incontinentia pigmenti achromians. (05 Mar 2000) |
| Riehl's melanosis | A brown pigmentary condition of the exposed portions of the skin of the neck and face with melanin pigment in dermal macrophages, thought to result from photodermatitis due to materials, such as cosmetic ingredients, or oils encountered in various occupations. (05 Mar 2000) |
| precancerous melanosis of Dubreuilh | An obsolete term for lentigo maligna. (05 Mar 2000) |
| neurocutaneous melanosis | Cutaneous giant pigmented nevi associated with melanosis of the leptomeninges; malignant melanomas may develop in the skin or meninges. (05 Mar 2000) |
| oculodermal melanosis | Pigmentation of the conjunctiva and skin around the eye, usually unilateral; seen especially in women of Oriental races. Synonym: Ota's nevus. (05 Mar 2000) |