Don't worry..100% cure possible..Fungal infection or Ring worm.. when occurs in groin, called as jock itch.. Usually fungal infection is common in moist areas of body like skin folds..It's mostly circular or round in appearance.. May be red or black in colour.. Treatment depending on the type and severity.. Avoid sharing clothes, towels and soap; sweating also increases it..As it has to be differentiated from eczema and infection, its a must to see and confirm the diagnosis for proper treatment..So, please send photos of the affected area by direct online consultation for accurate diagnosis and treatment.

I understand your concern . This is common condition affecting active individuals who sweat a lot around armpits and groin area . Many people use steroid containing combination like fourderm, panderm cream or bentovate c cream. Fungus would get resistant following such applications. Avoid tight fitting garments to control the sweat and appropriate 2 months of oral antifungal course would help in eliminating it completely. Of late we are saying adult onset diabetes cases as well, in such case we go for certain blood tests as well. Do connect for further management!