494 DISEASES OF THE SKIN 



(14) T. palpebralis. 



A rare form of ringworm that attacks the eyebrows usually by 

 spreading from the face. 



(15) T. sabouraudi tropicalis. 



Parasite, Trichophyton blanchardi ; cultures of it cannot be 

 grown . 



Attacks the legs. 



Lesions commence by erythematous patches covered with 

 small pityriasic squama, later there is a circinatiform appear- 

 ance with a dark brown base. Pruritus is marked. In 

 chronic cases there is thickening of the skin. 



Treatment. — A cold climate causes it to disappear. 



Apply chrysarobin ointment, 2 per cent, to 4 per cent. 



(16) T. ungium. 



Parasite, Epidermophytons, Trychophyton and Endodermo- 



phytons. 

 Attacks the nails of the fingers and toes. 

 Lesions cause discoloration of the nails, brittleness, roughness 



and splitting of the free border. 

 Treatment is difficult. 



Soften the nails by rubbing in liquor potassium. 

 Apply wet dressings of hyposulphite of soda or 



-^ Pot. iodid. ... ... ... ... lo'oo grammes 



Iodine ... ... ... ... i"oo „ 



Water, ad. ... ... ... ... i"ooo c.c. 



If the accompanying condition is due to T. imbricata, use 



resorcin in tincture of benzoin, i in 16. 



(17) T. versicolor (Pityriasis versicolor) . 



Parasite, Microsporon furfur; cultures are grown with diffi- 

 culty. The double contour spores are found in clusters. 

 Attacks the trunk usually, less frequently the arms and face. 

 Lesions are rounded, slightly raised, scaly patches with a 

 well-defined border, often fused, of a brownish tint, some- 

 times black. Pruritus is marked. 

 Treatment. — Spontaneous cure ultimately. 

 Wash with soft soap and warm water. 

 Apply tincture of iodine. 



Naphthol ointment, i in 39, or sulphur ointment, i in 20, are 

 efficacious. 



TRICHOMYCOSIS. 

 A nodular affection of the hair, generally of the axillary regions, 

 caused by a Nocardia which closely resembles, but is not identical 

 with Leptothrix. The affected hairs have soft thickenings of yellow, 

 black or red colour, easilv removed from (he hair. 



