I want to cure from erectile dysfunction permanently. I want to know the root cause of it .which specialist I have to see. Previously I have visited 2 urologist in my city and 1 psychiatrist. One suggested me tadalafil and one suggested me sildenafil. After taking 4 months these medicines I faced severe side effects. Which specialist I have to see now .none of the above doctors did not prescribed me some tests. As they told me that you have psychological issues. But I know that I have no psychological issues. Only allopathic doctors suggest me .and guide me.