Mental illness conveys the same meaning as psychological abnormality, but it implies a medical or somatogenic rather than psychogenic cause.

Mental Illness

Encompasses a wide range of mental health conditions that affect mood, thinking, and behavior, leading to distress or difficulty functioning.

Psychological Abnormality

A behavioral, emotional, or cognitive dysfunction that is unusual for the cultural context, causes distress or impairment, and is not expected as part of normal development.

Somatogenic

Pertains to physical causes of psychological symptoms, originating from bodily or biological factors.