i just read your problem
i would like to know on what surface the "pimple"
is errupting palmar side or dorsal side
if possible mail me the pictures of the erruption..
and also tell me if it is painfull?
has any secretion?
what area is turning black?
around the pimple or on it or elsewhere?
or breathing problem or joint pain?
any one else in ur family with any kind of disease?
you were ever hospitallised for more than 3 days?
reply and don`t worry
for the time being wash the area with neem water decoction and apply aloe vera
fresh twice a day