Low levels of testosterone or thyroid hormone can interfere with the stimulation process necessary in the erection sequence. Excessive production of prolactin by the pituitary gland may contribute to decreased levels of testosterone resulting in a lack of desire. Diabetes once again enters the scenario as it is classified as an endocrine disorder. Psychological impotence is usually diagnosed when no physical causes can be defined. Pure psychological impotence usually occurs suddenly without warning as opposed to physical impotence that may gradually develop over years.
Performance anxiety is one of the most common causes of psychological impotence.
When a man feels pressured to achieve or maintain an erection, he will commonly become anxious and nervous when in a sexually demanding situation. The release of these inhibitors further contributes to failure resulting in more anxiety. Therefore, the cycle begins, increased stress resulting in increased catecholomines that further inhibits the erectile process. Depression is another cause of psychogenic impotence. Anatomical Deviation of the Penis , Peyronies Disease, may also cause impotence.