PYOSIS MAN SON I 



2019 



common during the hot season in China, the Malay Peninsula, 

 Ceylon, and Southern India, and probably in many other parts 

 of the tropics. Castor has reported it from Burma. Very often 

 epidemics occur among the crews of men-of-war stationed in the 

 tropics, as observed by Clayton, or in offices, as observed by 

 ourselves. 



etiology. — Manson'jfound a diplococcus; other observers have 

 described Leishmania-like bodies; in Clayton's and our experience 



Fig. 794A. — Pyosis Mansoni. 

 Same case as Fig. 794, but more magnified. 



the examination of the contents of the vesicles shows the presence 

 of cocci generally arranged in pairs, and having often a gonococcus- 

 like shape. They are, however, Gram-positive, and in cultures 

 present all the characters of the Aurococcus aureus and albus. The 

 disease is probably spread by contact. 



Symptomatology —The affection has nothing to do with that 

 group of diseases to which writers on dermatology apply the term 



