It is necessary to switch positions frequently to relieve pressure and allow blood flow in the area of a pressure sore on the buttock, which can include lying on the stomach, according to the Mayo Clinic. Pressure sores can become infected, so proper consultation with a physician is important.
Other types of relief from pressure sores, also known as bed sores, include using protective padding to reduce the pressure and assist with staying in a desired position, notes the Mayo Clinic. Categories of pressure sores include phases I through IV or unstageable.
Those who are immobile, such as those in a wheelchair or confined to bed rest, become prone to pressure sores, explains Merck Manuals. This condition is often a result of minimal blood flow to a specific area of the body, such as the buttocks, hips, heels and elbows.