Withdrawal syndrome generally refers to a mental and neurological symptom after long-term addiction to a certain psychoactive substance, due to sudden reduction or cessation of use, mainly manifested as insomnia, irritability, depression, emotional instability, accompanied by some symptoms of autonomic dysfunction, such as nausea, vomiting, lacrimation, runny eyes, abdominal pain, diarrhea, gastrointestinal symptoms, or some general pain generalized symptoms, and in severe cases, tremors, convulsions, and other epilepsy-like symptoms may occur, or worse, may lead to death. The most common clinical withdrawal syndrome is alcohol withdrawal syndrome, which is generally treated with benzodiazepines, or small doses of antipsychotics.