Author: Nick G Broadhurst
The drug type personality can be better described as a biochemical personality. It does exist.
Perhaps the very first biochemical personality was the fictional Mr. Hyde alternative version of Dr. Jekyll. In the Robert Louis Stevenson novella Dr. Jekyll swallows a potion (drug) and slowly transforms into the murdering criminal Mr. Hyde. At first Hyde can revert back to Dr Jekyll, but after time he permanently remains the monstrous Mr. Hyde. Stevenson wrote this novella while using cocaine, and died at the age of 44 in Samoa after years of ill health.
