Hi! Good evening. I am Dr Shareef answering your query. Even though it needs a personal physical examination of the lumps, from your history, it seems that you have got multiple sebaceous cysts of the scrotal skin, a common occurence. Some of it might get infected, specially if you fiddle with it and could cause pain and exude pus. If I were your doctor, I would advise you not to fiddle with any of these to avoid infection, and as they do not have any other medicinal treatment, you could consult a general surgeon in your area to get these removed surgically. Presently if some are painful, then I would advise you with a broad spectrum antibiotic and an anti inflammtory drug along with a proton pump inhibtor for a symptomatic relief and to eradicate the infection. I hope this information would help you in discussing with your family physician/treating doctor in further management of your problem. Please do not hesitate to ask in case of any further doubts. Thanks for choosing health care magic to clear doubts on your health problems. I wish you an early recovery. Dr Shareef.