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Alcohol withdrawal : ウィキペディア英語版
Alcohol withdrawal syndrome

Alcohol withdrawal syndrome is a set of symptoms that can occur when an individual reduces or stops alcoholic consumption after long periods of use. Prolonged and excessive use of alcohol leads to tolerance and physical dependence. The withdrawal syndrome is largely a hyper-excitable response of the central nervous system due to lack of alcohol. Symptoms typical of withdrawal include agitation, seizures, and delirium tremens.〔
Sedative-hypnotics, such as alcohol, are well known for their ability to cause physiological dependence. This dependence is due to alcohol-induced neuro-adaptation. Withdrawal is characterized by neuropsychiatric excitability and autonomic disturbances. Dependence on other sedative-hypnotics can increase the severity of the withdrawal syndrome.〔

About half of people with alcoholism will develop withdrawal symptoms upon reducing their use.〔 Of these, about three to five percent develop DTs or have seizures.
==Signs and symptoms==
Signs and symptoms of alcohol withdrawal occur primarily in the central nervous system. The severity of withdrawal can vary from mild symptoms such as sleep disturbances and anxiety to severe and life-threatening symptoms such as delirium, hallucinations, and autonomic instability.
Withdrawal usually begins 6 to 24 hours after the last drink. It can last for up to one week.〔 To be classified as alcohol withdrawal syndrome, patients must exhibit at least two of the following symptoms: increased hand tremor, insomnia, nausea or vomiting, transient hallucinations (auditory, visual or tactile), psychomotor agitation, anxiety, tonic-clonic seizures, and autonomic instability.〔
The severity of symptoms is dictated by a number of factors, the most important of which is degree of alcohol intake, length of time the individual has been using alcohol, and previous history of alcohol withdrawal.〔 Symptoms are also grouped together and classified:
*Alcohol hallucinosis: patients have transient visual, auditory, or tactile hallucinations, but are otherwise clear.〔
*Withdrawal seizures: seizures occur within 48 hours of alcohol cessations and occur either as a single generalized tonic-clonic seizure or as a brief episode of multiple seizures.
*Delirium tremens: hyperadrenergic state, disorientation, tremors, diaphoresis, impaired attention/consciousness, and visual and auditory hallucinations.〔 This usually occurs 24 to 72 hours after alcohol cessation. Delirium tremens is the most severe form of withdrawal and occurs in 5 to 20% of patients experiencing detoxification and 1/3 of patients experiencing withdrawal seizures.〔

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Alcohol withdrawal syndrome」の詳細全文を読む



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