<prompt> Formication is seenCannabisCocaineOpioidsEcstasy  <response>: Formication - also know as magnan phenomenon or cocaine bugs it is tactile type of hallucination seen in cocaine intoxication Jet black pigmentation - also seen in cocaine Flashback phenomenon run amok amotivational syndrome - seen in cannabis Flu like syndrome water from everywhere - lacrimation, sweating, rhinorrhea and diarrhea seen in opioids withdrawal 