Noun
Used other than figuratively or idiomatically: see chemical, imbalance.
(euphemistic) Mental illness.
Source: en.wiktionary.orgThere's a new science out called orthomolecular medicine. You correct the chemical imbalance with amino acids and vitamins and minerals that are naturally in the body. Margot Kidder
I have a chemical imbalance that, in its most extreme state, will lead me to a mental hospital. Carrie Fisher
There is no such thing as a chemical imbalance in a body. Tom Cruise