Originally: †an ulcer caused by venous stasis (obsolete). Later: any of various disorders characterized by patchy or generalized hyperpigmentation of…

Medicine. Neonatal jaundice. Obsolete. rare.

= melanopathy n.

(See quots.)

= xanthoma, n. Also attributive.

yellow discoloration of the skin from change in the pigment.

yellowness of the skin.

= xanthoderma n.

An affection of the skin, characterized by the growth of yellowish patches or tubercles. Also, esp. in modern use, such a patch or tubercle…

Medicine, affection of the system by the action of silver; silver-poisoning.

An affection of the skin, characterized by yellowish-brown or blackish patches, either accompanied with a fungous growth, or due simply to…

deficiency of colouring matter or unnatural whiteness in the skin.

a rare, hereditary disorder in which skin exposed to the ultraviolet light of the sun becomes discoloured and swollen, chronic injury leading in…

Medicine. Excessive colouring or pigmentation, esp. of the skin.

= melanoderma, n.

= leucoderma n.

Medicine. Excessive coloration or pigmentation of the skin.

excessive pigmentation.

(See quot. 1890.)

(a) (see quot. 1894); = xanthochroia n. at Xanthochroi, n. derivatives; (b) a yellowish discoloration of the cerebrospinal fluid as a result of…

= xanthoderma n.

Biology. The production, accumulation, or deposition of melanin; the development of a brown or black colour as a result of this.