Symptoms of preneuropathy mainly include dizziness, headache, tremor, erratic movement, abnormal sleep, paralysis of the lower limbs, hemiplegia or numbness of the limbs, abnormal sensation, convulsive stupor, inability to control urination and defecation effectively, and muscular atrophy or muscle weakness. Psychological symptoms mainly include emotional changes, becoming cold, losing previous enthusiasm, indifference to loved ones, estrangement from friends, and disinterest in things around them. Sleeping changes, gradual or sudden difficulty in sleeping, waking up easily or not sleeping deeply, nightmares or sleeping too much. Sensitive and paranoid, very sensitive to everything and feels that everything is against him, always observing other people’s every move. Behavioral abnormalities, behavior gradually become eccentric, like to be alone, talking to himself, lazy life, indiscipline, etc..