Withdrawal symptoms are side effects related to the lack of the drug in the body. Other withdrawal symptoms may include increased appetite, insomnia, constipation, or diarrhea. Some drugs can cause violence, tremors, seizures, hallucinations and sweating. Withdrawal symptoms are what usually prevents a person from stopping using drugs. The symptoms can sometimes be too difficult to manage, so the user resorts to continued drug use. Addiction persists even when people experience health problems. A person continues to take a drug even though they know it is harming their body. For example, cocaine causes strokes because it restricts blood vessels in the brain. It can also cause heart attacks due to increased blood pressure and heart rate. Addiction can lead to social and recreational sacrifices. You can lose friends to drug addiction because you can spend more time on drugs. An alcoholic may not be able to spend time with his friends if he has a