Symptoms and signs of hypoglycemia can have the following clinical manifestations: (1) Sympathetic nervous system excitement: pale face, palpitation, cold limbs, cold sweat, hand tremor, leg weakness, general fatigue, dizziness, dizziness, hunger, panic and anxiety, etc., which can be relieved after eating. (2) Symptoms of consciousness disorder: hazy consciousness, decreased orientation and discrimination, lethargy, excessive sweating, tremor, impaired memory, headache, apathy, depression, dreamlike state, dementia in severe cases, and some people may have strange behaviors. These neuropsychiatric symptoms are often mistaken for insanity. (3) Epilepsy symptoms: Paroxysmal convulsions, mostly grand mal or status epilepticus. (4) Symptoms of pyramidal tract and extrapyramidal system involvement: unconsciousness, restlessness, hyperalgesia, clonic dance movements, dilated pupils and even tonic convulsions. (5) Cerebellum involvement: * * * ataxia, uncoordinated movement, inaccurate distance discrimination, low muscle tone and abnormal gait, etc., especially in the late stage of hypoglycemia, * * * ataxia and dementia often occur. (6) manifestations of brain nerve damage: abnormal vision and visual field, diplopia, dizziness, facial paralysis, dysphagia and hoarseness. (7) Peripheral nerve damage: numbness of limbs, muscle weakness or muscle tremor, etc., which can also cause foot drop, hand and foot fine motor failure, such as being unable to write, eat, walk or even stay in bed. (8) Hypoglycemia caused by organic lesions: The most common manifestation is insulinoma hypoglycemia.