Can you get boils under a cast?

Yes, it is possible to develop boils under a cast. Boils are caused by a bacterial infection of the skin, and can occur anywhere on the body, including under a cast. Symptoms of a boil under a cast may include pain, swelling, redness, and drainage of pus. If you suspect you may have a boil under your cast, it is important to seek medical attention as soon as possible. Treatment for boils typically involves antibiotics and drainage of the infection.