Drug Withdrawal SyndromesBenzodiazepines:%u2022 Symptoms:%u2022 Anxiety, insomnia, agitation%u2022 Treatment:%u2022 Diazepam with gradual dose reductionCocaine:%u2022 Symptoms:%u2022 Depression, restlessness%u2022 Treatment:%u2022 Propranolol, Diazepam