476 DISEASES OF THE SKIN 



TREATMENT. 



Avoid stimulanls, irritants and sea air. 



Examine for auto-inoculation, and deal ^vilh it when found. 

 If intestine is affected give salol, ichthyol, &c. 

 Tincture of iodine externally is often good. 



For chronic cases, carbon-dioxide snow, ionization with zinc or 

 copper, high-frequency current and Finsen light. 



MONGOLIAN SPOTS. 



Mulberry coloured, smooth, non-elevated spots, occurring usually 

 about the sacral region, the colour not disappearing on pressure. 



It is of unknown origin, and is found chiefly amongst the Chinese, 

 Koreans, Japanese, Malays, Italians and Europeans. The spots may 

 be single or multiple, one to six or more. They appear at birth, and 

 spontaneously disappear about the third or fourth year. 



No treatment is necessar}^ 



MOSSY FOOT. 



A dense, warty, vascular, painful condition of the foot, occurring 

 in masses, seen chiefly amongst the Amazonians. It is of uncertain 

 origin and of chronic course. Cranston Low suggests that it is Tuber- 

 culosis cutis verrucosa. The masses may be half to three-quarters of 

 an inch high. 



THE MUCOUS MEMBRANE. 



Pathological skin conditions affecting the mucous membrane 

 secondarily are dealt ^^•ith elsewhere. Disorders arising more or less 

 primarily are dealt with here. 



Black Tongue (Hairy tongue). 



A dark brown or blackish hyperkeratosis, usually in front o'f the 

 rircumvallate papillae, commencing in the mid-line, found usually in 

 adult males, persisting for weeks and perhaps years, and then spon- 

 taneously disappearing. 



Treatment, apart from mouth washes, is unnecessary. 



Cheilitis Exfoliativa. 



A persistent exfoliation, recurring, of the vermilion of the lips, 

 accompanied by numbness or burning pain, probably caused by the 

 liabit of gnawing and picking the lips in neurotic individuals. Radium 

 may clear up the condition. 



Cheilitis Glandularis. 



A chronic inflammation of the lower lip with enlargement of the 

 mucous glands, dilatation of the follicular openings, the formation of 

 fistulous tracts which discharge a viscid secretion, sometimes fixing 

 the lips together during the night. 



