madness

Example:The patient was diagnosed with insanity, unable to distinguish between reality and fantasy.

Definition:a state of severe mental disorder characterized by impaired or lost contact with reality, often resulting in irrational behavior.

Example:The doctor tried to calm the patient whose ravings showed signs of insanity.

Definition:wild or incoherent speech or writing, especially of a person who is mentally ill or excited.

Example:Rumors of his insensibility spread, leading to a mental examination and a diagnosis of insanity.

Definition:a state of impaired or lost mental responsiveness or sensibility (especially to reason or sobriety); often implies a loss of capacity for rational thought or action.