Many things can cause a swollen penis. If you have penile swelling, your penis may look red and irritated. The area might feel sore or itchy.
Balanitis is a swelling of the foreskin, or head of the penis. Symptoms of balanitis include swelling, redness, discharge, itchiness, and pain.
Symptoms include an itchy rash, red skin, swelling, irritation, and itching around the head of the penis, lumpy discharge under the foreskin.