mental illness *
mental disease
psychopathy

In 1912, he died due to a severe mental disease.

Is it unusual for a mental disease to attack a specific group of this sort?

It's almost like the wrong program could be a mental disease.

Studies suggest that both body and mental disease arise from each other.

But of course I'm not a specialist in mental diseases.

This hospital was also dedicated for patients with mental diseases.

He also called the cold war "a collective mental disease of mankind."

I was then excluded on an insurance policy for all mental diseases.

Indeed, some descriptions of mental disease read to me like diabetes.

"We are asking you to find her not responsible for reason of mental disease or defect."