2. Hematoma. A hematoma is a deep bruise. Blood from a damaged blood vessel pools under the skin, creating a red or purple spot.
Where the blood collects, it causes the skin to turn purple. This can happen anywhere, including on the penis. Often, when a bruise occurs, the.
Bruising happens when an injury causes tiny blood vessels under your skin to leak. That can make your skin turn purple, blue, green, or even black. That can lead to intense bruising, swelling, and a deep purple color, Dr. Brahmbhatt says. Penile fractures usually require surgery.