Symptoms of heat stroke such as sweating shutdown, dizziness and headache, and mental disturbance often occur when the body temperature exceeds 39 degrees Celsius or 40 degrees Celsius, and respiratory failure can occur within hours in severe cases. The examination of sweating shutdown due to sweating herpes: 1. Medical history The medical history should include detailed questions about the causes of abnormal sweating before it occurs. Such as whether there is mental stress, emotional excitement, whether there is neurotrauma, history of medication and disease. For example, hemophilia can cause hemosiderosis, and taking chlorpheniramine can cause redness of sweat. Ask if there are similar patients in your family to exclude genetic factors. 2.Physical examination Physical examination should focus on whether there are skin signs that induce abnormal sweating. If the patient is found to have ichthyosis, it is the cause of localized anhidrosis. The patchy damage of tuberculous leprosy, in addition to local sensory abnormalities, often has localized anhidrosis. Chronic radiation dermatitis damage, in addition to dry skin, atrophy, capillary dilation, often have localized anhidrosis. Therefore, a detailed physical examination can identify the cause of abnormal sweating to make a clear diagnosis. 3, laboratory tests Hematochezia can be performed with positive hemoglobin tests. The sweating test: applied to local sweating dysfunction, coated with tincture of iodine in the lesion, to be dried, respectively, injected in the skin 1:1000 concentration of hairy fruit aromatic alkali liquid 0.1-0.2ml, gently aspirate the tip of the exudate, immediately sprinkled with a thin layer of starch. 3-5min later, the normal skin starch appears blue dots, indicating normal sweating function. If there is no blue dot in the lesion, it means that the local sweating function is dysfunctional and no sweat is discharged.