Decubitus ulcer

The terms decubitus ulcer and pressure sore often are used interchangeably in the medical community. Decubitus, from the Latin decumbere, means "to lie down." Decubitus ulcer, therefore, does not adequately describe ulceration that occurs in other positions, such as prolonged sitting (eg, the commonly encountered ischial tuberosity ulcer). Because the common denominator of all such ulcerations is pressure, pressure sore is the better term to describe this condition.