1468 THE UNCLASSIFIED FEVERS OF THE TROPICS 



BAN BACH. 



Synonym. — La miliaire cristalline febrile. 



This fever was first described by Montel in 1912, and in 1916 

 by Sarailhe in Cochin China. It is characterized by an insidious 

 onset, followed by six to eight weeks' fever, terminating by lysis, 

 and attended by pulmonary catarrh and a very abundant vesicular 

 eruption, which is difficult to see unless looked for, and which comes 

 out in crops. The skin is dry, conjunctiva yellow, and there is con- 

 stipation, lassitude, and enlargement of the spleen and liver, with 

 rapid compressible pulse and sometimes delirium. Convalescence is 

 prolonged, and there is a complete loss of hair. Blood tests show no 

 parasites, and are negative for the enteric fevers. It is thought lo 

 be infectious. This resembles in many particulars the cases de- 

 scribed by Smith and Loughman at Aden in 1914, but they do not 

 mention the vesicular rash or the loss of hair. Both fevers probably 

 belong to the enteroidea, and should be examined bacteriologically 

 as to the blood and the faeces. 



FEBRIS PALUSTRIS REMITTENS. 



Described by Ludwig in 1917 as being characterized by an in- 

 cubation of twenty-one days and a fever of seven to ten days, 

 of a remittent type, with headache, pains in the muscles, weakness, 

 jaundice, and nephritis. It sounds like enteroidea. 



REITER'S DISEASE. 



This was also described in 1917, and resembles the above, but 

 there were pains in the joints, conjunctivitis, iritis, and cystitis, 

 with enlargement of the spleen and fever lasting about seventeen 

 days. 



OVOPLASMOSIS. 



A fatal fever described by de Raadt in an Annamese aged forty- 

 four years, with enlargement of the spleen, but not of the liver, 

 and with a temperature somewhat resembling subtertian malaria, 

 without malarial parasites in the blood, but with pigment in the 

 mononuclear leucocytes and resisting quinine therapy. The tem- 

 perature rose very high, and the patient died. Small intraglobular 

 rings were seen staining blue with Giemsa's mixture, and without 

 any trace of chromatin. These were also seen in the mononuclear 

 leucocytes, and were called Ovoplasma anucleatum de Raadt, 1913. 

 This sounds like subtertian malaria. 



H^EMOCYSTOZOON FEVER. 



HcBmocystozoon brasiliense Franchini, 1913, is a flagellate which 

 encysts in the peripheral blood, and was judged to be the fatal cause 

 of a quotidian fever in an Italian physician coming from Brazil. 



