Multiples and Substance Abuse
Like singlets, People with multiple personality often have reason to self-medicate, improve their perception of reality, partake in assisted psychological journeying (usually referred to as an out-of-body experience, astral travel, or shamanic journeying), self-(re)produce hypnotic states, and many other reasons for using controlled substances or abusing commonly available substances. Abuse survivors may try to use drugs to control dissociative episodes or try to repress memories.
Multiples are not exempt from any and all of the above reasons to use drugs. Occasionally, different persons in the system may react differently to drugs or medications.
Also particular to multiples is the use of controlled substances to control if, when, or how, other alters or residents may come Front.