<prompt> Most common form of diabetic neuropathy is: September 2009Cranial neuropathiesRadiculopathiesSensorimotor polyneuropathyLimb mononeuropathies  <response>: Ans. C: Sensorimotor polyneuropathy The overall prevalence of neuropathy is 66 for type I and 59 for type II diabetes.It can be divided into: Symmetric-may present as small-fiber involvement dysthesia of feet or autonomic dysfunction sexual impotence but often both occur together. Asymmetric neuropathies are divided into - Asymmetric abrupt onset neuropathies-diabetic truncal radiculoneuropathy, diabetic lumbosacral radiculoplexus neuropathy and oculomotor neuropathy. Cranial neuropathies-The 3rd,6th and 4th cranial nerve in decreasing order of frequency are involved. - Neuropathy of gradual onset includes entrapmentcompression neuropathies. Diabetic Sensorimotor polyneuropathy DSPN, a type of symmetric diabetic neuropathy is by far the most common form of diabetic neuropathy. Its prevalence is 55 for type I and 45 for type II diabetes. Initial symptoms includes numbness, tingling, burning or prickling sensation affecting the toes and feet. 