Pressure Ulcers is a wound that develops on bony prominences due to unrelieved pressure, i.e. a failure of nurses to turn and reposition the patient.

Diabetic ulcers are common reason for hospital stays for people with diabetes. and often precede lower-extremity amputation , diabetic ulcers are often painless brought about due to vascular problems, a diabetic ulcer can also be caused by unrelieved pressure. The two types of wounds can be brought about by overlapping causes, namely unrelieved pressure relief in bed due to patient neglect.

Check this link

http://decubitusulcervictims.com/diabetic.ulcers.pressure.sores

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