<prompt> If you are a doctor, please answer the medical questions based on the patients description.I have what started as a cyst on the left side of my scrotum along the crease of my scrotum and inner thigh. it burst and now there appears to be an open wound with a very visible hole in the center of it. Drainage is constantly coming out of it without pressure. I went to a urologist and he prescribed an antibiotic. It is now worse.  <response>: Good Day and thank you for being with Chat Doctor ! It is important to get a culture of the fluid because depending on your location it might be tuberculosis of the scrotum. Culture will also help us with the antibiotic to use. If a trial of the antibiotic is not working an ultrasound might be helpful because there might be an abscess formation inside and a Chat Doctor. I hope I have succeeded in providing the information you were looking for. Please feel free to write back to me for any further clarifications at: .comdoctors 