Hello,
Dilated veins are normal to be found on the penis. But if it is painful then it can be due to Mondor’s disease or penile varicose vein. Mondor’s disease is superficial thrombophlebitis of the penis. This is an inflammatory reaction to a clot within the vein. This subsequently causes blockages and dilation of the vein. It is typically painless, but can be painful. In studies, patients were noted to have thrombophlebitis after a prolonged sexual act with or without intercourse. It was described as cord-like thickening of the superficial penile veins.
Diagnosis can be confirmed by ultrasound.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.
You're not crazy. I sent you an article to read from somebody else with the same thing.