I think I may have erectile dysfunction or male orgasmic disorder; or a combination of both. I often have trouble getting an erection. And when I do, I can rarely sustain it for long enough to even have penetrative sex. Though I do sometimes have erections when receiving oral sex and normal sex, I have never actually orgasmed/ejaculated. I never really seem to feel any good sensation in my penis during sex. But, I do want to have sex with the partner and I do feel sexually attracted so I don t understand why I can t stay really erect and feel really good sensations in my penis. During self masturbation I CAN maintain an erection and ejaculate/orgasm consistently, but not during any form of sex with other people. I understand viagra can help me maintaining a good erection but I m not sure it will help with achieving an orgasm? Is there any other treatments for male orgasmic disorder? Thanks. I ll be happy to provide any further details if required.