Want to know more about pressure ulcers?



A pressure ulcer can develop on any soft tissue under prolonged pressure in as little as 1 to 2 hours.

 Although bony prominences (where the bone is close to the skin) are particularly susceptible to pressure ulcer development, friction and shearing force also contribute to the development of pressure ulcers.1,2

Shear is the result of gravity pulling tissue in one direction while friction keeps the skin stationary or going in the opposite direction.2

Maceration, with friction or shearing injury

Common locations for pressure ulcers are identified in the illustrations below:



Excess Moisture: Although moisture on the skin does not directly cause pressure ulcers, it softens or macerates the skin, making it more susceptible to damage from friction or shearing.1

Dryness: When skin loses its moisture, it becomes dry, flaky, and less flexible. Ulcers are more likely to develop in dry skin.1


If you are a carer and suspect that a pressure ulcer is developing and the skin is blistering or forming an open sore, seek medical attention immediately.

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