TKOPl CA L DERMA TOM YCOSES 



Geographical Distribution. — Tinea capitis is found in every part 

 of the tropics, but its incidence varies from country to country, and 



is far less common than epi- 

 dermophytoses and tricho- 

 phytoses of the body. 



In our experience tinea 

 capitis is less common in India, 

 Ceylon, and tropical Africa 

 than in Europe and America. 

 On the other hand, it is ex- 

 tremely common in American 

 negroes. 



etiology. — The following 

 fungi have been found in cases 

 of tinea capitis tropicalis :■ — 



Genus Microsporum Gruby, 

 1843. 



1. M. audouini Gruby , 1843, 

 in Brazil, Western Sudan, 

 Northern Africa and Mada- 

 gascar. 



2. M. fulvum Uriburu, 1907, 

 in the Argentine. 



3. M. scorteum Priestley, 

 19 14, in Tropical Queensland. 



Genus Trichophyton |Malmst en, 1848. 



1. T. circonvolutum Sabouraud, 1909, in Senegal and Dahomey. 



2. T. exsiccatum Uriburu, 1909, in the Argentine. 



3. T. polygonum Uriburu, 1909, in the Argentine. 



4. T. sahouraudi R. Blanchard, 1895, in Brazil. 



5. T. soudanense Joyeux, 1912, in Western Sudan. 



6. T. violaceum Bodin, 1902, in North Africa. 



7. T. violaceum Bodin, 1902, var. decalvans Castellani, 1905, in 

 Ceylon. 



8. T. violaceum Bodin, 1902, var. khartoumense Chalmers and 

 Macdonald, 1915, in the Sudan. 



9. T. currii Chalmers and Marshall, 1914, in the Sudan. 



Genus Ectotrichophyton Castellani and Chalmers, 1918. 

 E. discoides (Sabouraud, 1909) in the Anglo-Egyptian Sudan. 



Genus Achorion Remak, 1845. 



1. A. schoenleini Lebert, 1845, in the Anglo-Egyptian Sudan 

 Egypt, Tunis, Tripoli, Algeria, China, causing favus. 



2. A. quinckeanum Zopf, 1890; the cause of mouse-favus, rarely 

 infects man. 



Fig. 808. — Tinea Capitis due to 

 I Tr. violaceum Bodin var. decalvans. 



