yesterday afternoon I noticed that my left testicle was tender to the touch, like I sat wrong or something.  Slowly it swelled up a little bit and the whole left side of became tender.  I could still walk okay.  Later during the night, the tenderness subsided a bit....but my scrotum area became very itchy...I itched it on and off for awhile and then noticed that the swelling of the testicle subsided but now my penis shaft had swelled up under the head like it filled up with something.  Now I am sore around the scrotum area and the underside of the shaft is still swollen but seems to be shrinking.  I have had epidymitis about a year in a half ago and a a vasectomy about 12 years ago.  Your thoughts?
Hello, It is likely some infection that is causing soreness and itching.  Maintain hygiene. Use emollient cream. Do not use excessive soaps. Penis swelling needs to be taken seriously.  It may be infection or rarely serious diseases like paraphimosis or fracture. They need urgent medical intervention. Please see doctor urgently.  For swelling in the scrotum, it may be resulted of previous epididymitis or result of vasectomy. I will advise do Ultrasound of scrotum.  Hope I have answered your query. Let me know if I can assist you further. Take care