Which agent has a withdrawal syndrome characterized by yawning,rhinorrhea,and chills that alternate with excessive sweating?

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The first signs of heroin withdrawal are yawning,lacrimation,rhinorrhea,and diaphoresis,followed by a restless sleep.With further abstinence,anorexia,tremors,irritability,weakness,and excessive gastrointestinal activity occur.The heart rate is rapid,blood pressure is elevated,and chills alternate with excessive sweating.Amphetamine withdrawal causes ravenous appetite,aching muscles,and long periods of sleep.Diazepam withdrawal causes insomnia,hyperthermia,and convulsions.Nicotine withdrawal causes drowsiness,headaches,and increased appetite.

Which Agent Has a Withdrawal Syndrome Characterized by Yawning,rhinorrhea,and Chills