Is the recurrent inability to achieve or maintain an adequate erection until completion of sexual activity. It is not considered male erectile disorder if it is merely an occasional problem or if it does not create distress and interpersonal difficulty. Chronically or repeatedly, the patient cannot get or keep an erection sufficient to complete the sexual activity. Except for another Sexual Dysfunction. It causes marked distress or interpersonal problems.
Some disorders have similar or even the same symptoms.
For others, it may be of lifelong duration. Erectile disorders may accompany a fear of failure. Sometimes this disorder is present throughout life. In many cases the erectile failure is intermittent and sometimes dependent upon the type of partner or the quality of the relationship. Psychosocial factors are important in all forms of erectile dysfunction.