(Pressure sores; bed sores; decubitus ulcers; decubitus) Decubitus ulcers (DGS) are necrosed, ulcerated areas where the tissue is compressed between bony prominences and hard surfaces. They are caused by pressure in combination with friction, shearing forces or moisture. Risk factors include. a. an age of> 65, circulatory problems, immobilization and incontinence. The severity ranges from a non wegdrückbaren skin erythema up to the complete loss of skin with extensive Weichgewebenekrose….