Why is there a lump on testicle with pain while urination?

Hi,

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I have gone through your query, I would like to know a few more details. When was your last sexual contact, and after how many days did you get yourself tested? Is the burning sensation during peeing, throughout urination or just stay the start? Do you have to strain to pass urine or have frequent urination? Is there any pain around the lump you noticed and is it painful to touch? Do you clip your scrotal hair or shave them? Looking at the picture (attachment removed to protect patient identity), the redness surrounding the lump, it appears to be some inflammationof the hair follicle involving only the skin. It usually subsides with mild antibiotics, and as you are already on them, you do not have to do anything additional. I would, however, urge you to visit your local dermatologist or urologist for a visit, as a clinical exam is necessary to confirm the diagnosis. Regarding your burning sensation during urination, I would suggest you wait till you finish your antibiotics and if it persists, a urine examination would help to identify if there is any urinary tract infection.