Testosterone is the alpha and omega when it comes to anabolic steroids; all anabolic steroids are derived from testosterone; other anabolic steroids are simply altered forms of the testosterone hormone.estosterone is the alpha and omega when it comes to anabolic steroids; all anabolic steroids are derived from testosterone; other anabolic steroids are simply altered forms of the testosterone hormone.
Usually, it's damage from a physical injury or disease. 1  Cancer and other tumors can cause nerve pain. 2  HIV can cause painful nerve damage. 3  Diabetes is a common cause of nerve damage in the U.S. Over time, high levels of glucose in the blood (blood sugar) can injure the nerves. Shingles can be followed by a painful condition called postherpetic neuralgia. This type of nerve pain can be particularly severe and sudden.
MS is caused by damage to the myelin sheath. This sheath is the protective covering that surrounds nerve cells. When this nerve covering is damaged, nerve signals slow down or stop. The nerve damage is caused by inflammation. Inflammation occurs when the body's own immune cells attack the nervous system. This can occur along any area of the brain, optic nerve, and spinal cord. It is unknown what exactly causes MS. The most common thought is that a virus or gene defect, or both, are to blame.