• Withdrawal Symptoms:
    The symptoms experienced when a drug-dependent individual abstains from using the drug. Severity and duration of symptoms depends on many factors, including drug potency, drug dose, duration of dependence, genetics, age, and health. For potent CNS drugs, such as opioids, benzodiazepines, and barbiturates, symptoms may include flu-like symptoms, exhaustion, depression, anxiety, restlessness, insomnia, muscle aches, fever, chills, perspiration, nausea, and diarrhea.