This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Substance abuse, Subject name: Psychiatry
All are seen in nicotine withdrawal except 
Select and explain. 
A. Hyperhydrosis, B. Anxiety, C. Bradycardia, D. Insomnia
A: Hyperhydrosis
Answer: A: Hyperhydrosis 
Explanation: Nicotine withdrawal can occur 12-14 hours after last smoke and can present with anxiety, restlessness, poor concentration, decreased sleep, increased appetite and exacerbation of psychiatric symptoms in those with the pre-existing psychiatric disorder(s). Ref: A Sho Textbook of Psychiatry, Niraj Ahuja, 7th Edition, pg. no.52