Hi, happy to help you on your health concern on part of HCM!
In the present case of a swelling or lump in the crease between leg and
scrotum , if I were your consulting physician, I would just think of only one and one possibility and that is an infected sebaceous
cyst or epidermal inclusion cyst! And, also, there might be some super-added fungal infections too! Recurrent
folliculitis is also possibly there...
As per your description, it is grossly infected and moist; therefore try to keep the area dry and maintain local hygiene!
Take caution not to get injured there as this might invite infection.
If you are still worried, get some cytological or fungal scrappings test or microscopic examination for confirmation and apply local clotrimazole/clobetasol/
gentamycin creams for 1 month or revert back to us.
Hope you got your answer. Please feel free to write to us if any more queries.
Wishing you the best health!