Increased sweating after cold is one of the symptoms of spinal cord cavitation. Spinal cord cavitation is a bizarre sweating phenomenon of increased sweating after cold, accompanied by decreased temperature, hyperkeratosis of fingertips and nails, atrophy, and loss of luster. Due to the loss of pain and temperature sensation, burns and bruises and trauma are likely to occur. Late stage patients develop urinary and faecal disorders and recurrent urinary tract infections. The age of onset is 31 to 50 years old, and it is rare in children and the elderly. There are more males than females, and a family history has been reported. The clinical manifestations of spinal cord cavitation are threefold, and the degree of symptoms is strongly related to the early and late development of the cavity. The disease generally progresses slowly, and the early symptoms appear in a segmental distribution, affecting the upper extremities first. When the cavity expands further, the gray matter in the medulla and the white matter conduction bundles outside it are also involved, and conduction bundle dysfunction occurs below the cavity cavity. As a result, the symptoms are limited and mild in the early stage, while in the late stage, the symptoms are widespread and even paraplegic. According to the characteristics of chronic onset and clinical manifestations, there are segmental dissociative sensory disorders, lower motor neuron motor disorders occurring in the upper limbs, and upper motor neuron motor disorders occurring in the lower limbs, etc., and a clear diagnosis can mostly be made. The diagnosis can be further clarified by combining with the imaging manifestations. However, we should pay attention to the differential diagnosis with the following diseases: night sweating: is a Chinese medical term for a condition characterized by abnormal sweating after falling asleep and stopping immediately after waking up. The word “night sweating” means stealing, and ancient medical practitioners used the word “night sweating” to describe the disease. Whenever people fall asleep, or when they close their eyes and are about to fall asleep, sweat leaks out secretly like a thief. There are physiological and pathological aspects of night sweats. Chinese medicine uses umbilical therapy to treat night sweats with remarkable effect, night sweats patients should pay attention to self-care, strengthen physical exercise, reasonable dietary regimen. Hyperhidrosis: a disease caused by excessive secretion of sweat glands due to sympathetic overexcitation. The sympathetic nerve governs the sweating of the whole body. Normally, the sympathetic nerve regulates the body temperature by controlling sweating and heat dissipation, but the sweating and facial flushing of patients with hyperhidrosis completely lose their normal control, and the excessive sweating and facial flushing make the patients in helplessness, agitation or panic every day.