Formication is seen with: (A) Acute amphetamine intoxication, (B) Chronic use of amphetamine, (C) Alcohol withdrawal, (D) Cannabis poisoning
Answer is B. Tactile hallucinations (formication), in clear consciousness, may sometimes occur in chronic amphetamine intoxication. Ref: Sho textbook of Psychiatry by Niraj Ahuja, 7th edition, page 49.