"And you think there's a psychological cause for this?"

In my own case I cannot trace it back to any mental or psychological cause which one could point out and hold to.

Men who have erection problems because of psychological causes may also use these devices.

But she also thinks that deeper psychological causes are behind the robust market.

It has been estimated that even today, half of all obstetricians believe there is a psychological cause.

Don't look for psychological cause and effect or scientific logic.

False pregnancy in humans is less common, and usually has psychological causes.

Not the underlying psychological or social causes, but the immediate motive.

Whether this has a physical or a psychological cause, it is impossible to tell.

"If medical and psychological causes are ruled out, patients can be referred to pain management centers."