Pressure ulcers, also known as “bed sores,” are wounds to the skin or the tissue under the skin. They can happen when a person spends a long time in the same position, such as in a hospital or long-term care setting. Pressure ulcers can be very painful and slow to heal, and they increase the risk for infection. They are common where skin is close to the bone, such as the back, the shoulders, the hips, and over the tailbone. Risk factors for pressure ulcers include older age, black race or Hispanic ethnicity, low body weight, mental or physical impairments, incontinence, diabetes, and malnutrition.