Decubitus ulcers, also known as pressure sores or bedsores, are injuries to the skin and underlying tissue that occur when there is prolonged pressure on the skin. They commonly develop in areas where bones are close to the skin, such as the heels, hips, and tailbone. These ulcers can range from mild redness to severe wounds that expose deeper layers of tissue. Preventing decubitus ulcers involves regular repositioning of individuals who are immobile, maintaining good skin hygiene, and using specialized mattresses or cushions. Treatment may include cleaning the wound, applying dressings, and in severe cases, surgical intervention may be necessary to promote healing.