<prompt> Formication is seen withAcute amphetamine intoxicationChronic use of amphetamineAlcohol withdrawalCannabis poisoning  <response>: 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. 