The term "chemically imbalanced" is often used to describe mental illnesses that are thought to be caused by an imbalance of chemicals in the brain. However, this term can be stigmatizing, as it implies that there is something inherently wrong or abnormal about a person's brain chemistry. Some synonyms that may be used instead include "neurochemical disturbance," "neurotransmitter dysfunction," or "neurological disorder." These terms focus more on the physical nature of the condition rather than suggesting that the person is inherently flawed. Additionally, it is important to note that mental illnesses are complex and often multifaceted, and there is still much to be understood about the underlying causes.