What Is a Pressure Ulcer?
A pressure ulcer is a type of sore caused by pressure against the skin. When there is pressure, blood flow to the tissue is limited.
Blood flow is responsible for delivering oxygen and nutrients to the tissue. Without these, the skin and surrounding tissues become damaged and can die.
Typically pressure ulcers are found in those with limited mobility who cannot frequently change their position. This is often caused by a medical condition that requires them to spend most of their time in bed or a chair. Friction can also cause pressure ulcers. When the skin rubs against something, it can create friction that leads to injury.