(HealthDay News) -- Pressure ulcers, commonly called bed sores, are wounds that develop on the skin from staying in one position without shifting your weight.
People who have just had surgery and aren't able to get out of bed, for example, may acquire a pressure ulcer because the constant weight on the affected area decreases blood supply, killing affected tissue.
The U.S. National Library of Medicine says the following conditions may foster pressure ulcers.: