TINEA {RINGWORM) • 491 



(4) T. capitis (tonsurans). 



Parasite, Trichophytons violaceum, T. sudanense, T. poly- 

 genum, T. exsiccatum, rarely also Microsporons. 



Incubation under two weeks. 



Attacks the scalp. 



Lesions, patches increase in size surrounded by an erythema- 

 tous zone, sometimes vesicles appear, the patch is studded by 

 broken hair stumps and debris at the roots, making the 

 epidermis to resemble "goose-skin." 



A serious suppurative variety is known as "kerion," when 

 the pus in the follicles loosens the hairs, but sloughing never 

 occurs. The patches usually remain bald. 



Treatment. — X-rays, epilation by forceps, turpentine oil, 

 tincture of iodine and weak chrysarobin ointment, 2 per cent. 



(5) T. circinata (Ringworm of the Body). 



Parasite, usually Trichophytons, rarely Microsporons. 



Attacks the face, neck, hands and wrists most frequently. 



Lesions, a small red spot enlarged in a ring form and may 

 reach a considerable size, or several small coalesce and form 

 festooned patterns. Sometimes the diagnosis is not easy but 

 the presence of the fungus, when found, is conclusive. 



Treatment, remove superficial epidermis by iodine or liquor 

 epispasticus. This may destroy all the fungi. It is best to 

 follow it up with ointment as: — 



1^ Chrysarobin ointment 



Salicylic acid 



Ichthyol 

 Unguentum simplex 



(6) T. cruris (Eczema marginatum, Dhobie Itch). 



Parasite, Epidermophylon inguinale, peculiar to man, widely 

 distributed in the tropical and sub-tropical countries. The 

 term "dhobie itch" is loosely used in the East for 

 epiphytic skin diseases which are supposed to be contracted 

 from clothes returned by the dhobie or washerman. 



Attacks pubic, anal, perineal, axillary and other regions where 

 skin folds are in contact, e.g., interdigital folds. It never 

 attacks hair but remains in the stratum corneum. 



Lesions have a broad, well-defined margin, scaly and papular. 

 They may assume an eczematoid character. Pruritus is con- 

 siderable and pyogenic infection common. 



Treatment : — 



]?^ Chrysarobin 



Ichthyol 



Ungent. zinc oxide 

 Acid salicylic. 

 Vaseline ... 



)> 



... 20 



4 drachms 

 8 grains 

 I ounce 



Apply morning and evening for fourteen days. 



20 grams 



