What are the symptoms and causes of withdrawal? Which drugs cause serious signs of withdrawal?
Answer:
The symptoms occur when a person stops taking a drug, and they can persist for days. If a heavy drinker stops drinking alcohol, he may experience hand tremors, sweating, nausea, anxiety, and insomnia. The especially serious symptoms include convulsions and hallucinations. In some cases, delirium may develop. The symptoms of withdrawal related to other drugs vary. Withdrawal symptoms are most obvious for alcohol, opioids, and sedatives, hypnotics, and anxiolytics. Withdrawal signs are not often seen after repeated use of cannabis or hallucinogens and can be relatively light for cocaine. When an individual uses a psychoactive drug, the body, especially the brain, reacts against it. This process, known as tolerance, has the effect of reducing the impact of the drug. When this person stops taking the drug, the processes that caused his tolerance are still in place until his body has a chance to undo them. During this period of time, the individual will experience symptoms that are essentially the opposite of taking the drug, which are called withdrawal symptoms.
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