<prompt> Magnan syndrome is seen in which poisoning -MorphineAlcoholCannabisCocaine  <response>: Altered tactile sensation: the person feel that some small insects are crawling on his skin. This is known as Magnans symptom or cocaine bugs formication. REF;THE SYNOPSIS OF FORENSIC MEDICINE:KS NARAYANA REDDY;28th EDITION;PAGE NO 347 