A homocysteine blood test is done to: 1  Help identify vitamin B12 deficiency or folic acid deficiency. 2  Help identify a rare inherited disease (homocystinuria) that causes a deficiency of one of several enzymes needed to convert food to energy.  Help determine a cause for otherwise unexplained blood clots.
Category : Causes of Bed Sores. Common Causes of Bed Sores. Bedsores are damaged skin caused by a lack of proper blood flow to the skin because of pressure. The bedsore can occur in individuals at any age when bedridden, in a chair or wheelchair without the ability to reposition themselves.
Pressure sores may also result from friction caused by your skin rubbing against another surface, or when two layers of skin slide on each other, moving in opposite directions and causing damage to the underlying tissue. This may happen if you are transferred from a bed to a stretcher, or if you slide down in a chair.