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.
Cold sores are usually caused by the herpes simplex virus (HSV) type 1, which is transmitted by such forms of contact as kissing an infected person or sharing eating utensils, towels, or razors. Genital herpes is usually caused by herpes simplex virus type 2.A person with a cold sore who performs oral sex on another person can give that person genital lesions with HSV-1. Similarly, a person who performs oral sex on another person with genital HSV-2 lesions can develop oral lesions.old sores -- also called fever blisters -- are a painful infection caused by the herpes simplex virus (HSV). These blisters are usually caused by HSV type 1, but can less commonly be due to HSV type 2.