For a person in the middle of a serious drug trip, hallucinations, confusion and raging emotions can make it feel as if he or she is teetering on the edge of insanity.
Depending on the drug and the person, it very well might be true.
In an issue of Marie Claire, singer Stacey "Fergie" Ferguson of the Black Eyed Peas describes a harrowing drug trip from crystal meth -- a drug known for its distressing psychological aftermath.
"I had about 20 different conspiracy theories. I painted the...Full Story