This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
[{'content': 'Child presents with sweating, yawning, lacrimation, tachycardia. The likely diagnosis is: \nSelect and explain. \nA. Heroin withdrawal, B. Cocaine withdrawal, C. LSD withdrawal, D. Marijuana withdrawal', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Characteristics of Opioid Withdrawal: SymptomsSignsRegular withdrawal Craving for opioidsPupillary dilationRestlessness, irritabilitySweatingIncreased sensitivity toPiloerection ("gooseflesh")PainTachycardiaNausea, crampsVomiting, diarrheaMuscle achesIncreased blood pressureDysphoric moodYawningInsomnia, anxietyFeverProtracted withdrawal AnxietyCyclic changes in weightInsomniaPupil size, respiratoryDrug cravingCenter sensitivity Ref: O\'Brien C.P. (2011). Chapter 24. Drug Addiction. In L.L. Brunton, B.A. Chabner, B.C. Knollmann (Eds), Goodman & Gilman\'s The Pharmacological Basis of Therapeutics, 12e.', 'role': 'assistant'}]