No or little sweating in the lower body is a sign of abnormal sweating in diabetic autonomic neuropathy. There are signs of yin deficiency, which makes your body hot. As well as the effects caused by plant nerve dysfunction. So, what are the tests that need to be done in patients with diabetic autonomic neuropathy causing no sweating or little sweating in the lower part of the body? The following is a brief introduction: 1, gastrointestinal autonomic function examination: 1, gastric emptying measurement: at present, the scintigram of gastric emptying is the most sensitive and can be used as a clinical method. 2, manometry can find the proximal gastric and gastric sinus section hypokinesis, continuous low amplitude sinus movement, high amplitude pyloric contraction. 3, gastric electrogram. 2, bladder function testing: bladder ultrasound to determine residual urine volume, increased bladder residual urine volume in diabetic autonomic neuropathy. Urodynamic testing. Urethral flowmeter, cystometry, nerve conduction velocity and International Prostate Symptom Score (IPSS) are used to evaluate the autonomic function of the urethra-cyst can be found abnormal. 3, neuromyography: neuromyography has some value in the diagnosis of diabetic peripheral neuropathy, and can detect subclinical nerve damage, which has obvious changes in the early stage of diabetes, even before the appearance of clinical symptoms, so it has early diagnostic value.