neurologic disorders
Nerve and Muscle Biopsy
Introduction
Nerve and muscle biopsy are usually done simultaneously. Nerve biopsy can help differentiate axonal from demyelinating polyneuropathies when other tests are inconclusive. A nerve supplying the affected area should be chosen. If polyneuropathy may be caused by Overview of Vasculitis , the sample should include skin to increase the chances of finding a characteristic vascular abnormality. If the biopsy shows that nerve endings are lost, skin punch biopsy can help confirm small-fiber polyneuropathy. Muscle biopsy can help confirm Congenital Myopathies . 