Penile edema is simply swelling caused by extra fluid trapped in the skin and soft tissues of the shaft or foreskin. It can appear suddenly after surgery, injury, tight clothes, or even long flights.

Puffy “donut” swelling is the hallmark. The shaft looks thicker, and the foreskin can balloon like a marshmallow—usually painless but tight.

Skin feels tight and shiny. Erection or simple movement can make it feel as though the skin might split.

Color stays normal early. Pink skin is just swollen; dark or purple areas need urgent review.

Discomfort is dull. A heavy, dragging ache is common; sharp pain suggests something more serious.

Pitting shows when you press. A fingertip leaves a temporary dent, much like a water-filled balloon.

If swelling blocks blood flow, the head becomes cold or numb—an emergency alarm.