Fungal infection.. Also called jock itch, when occurs in groin.. 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, bacterial and viral infection, doctor need to see to confirm the diagnosis..So, meet me in my clinic or do direct online consultation by sending photos for detailed information and medicine for treatment.

This description sounds like acanthosis nigricans. This is a condition where your skin​ folds like underarms, inner thighs or groin, neck and face becomes dark. It is either genetic or due to sedantry lifestyle and overweight. This can be treated. Please call me or contact me with photos using online consult option for proper diagnosis, treatment advice and prescription. ,,,

Yes,  there are many treatments starting from creams, tablets, lasers and peels. It needs to properly diagnosed the reason for darkening should be known before treatment.  It can be due to obesity,  familial, pregnancy, frictional, medication, fungal, bacterial