system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Withdrawal of which of the following causes piloerection
assistant
The correct answer is  Opioid withdrawal: The characteristic symptoms include lacri mation, rhinorrhoea, pupillary dilation, sweating, diarrhoea, yawning, tachycardia, mild hyper tension, insomnia, raised body temperature, muscle cramps, generalised bodyache, severe anxiety, piloerection, nausea, vomiting and anorexia. Ref: Ahuja Sho textbook of psychiatry by Niraj Ahuja 7th edition, page 43.