In many instances, a simple physical exam and answering some simple questions is enough to diagnose ED, but the important thing is to diagnose the cause of ED, so for this, a professional might recommend testing or a consultation with a specialist. For your diagnosis, tell the doctor about what you believe could be causing your case of ED. Mention any medications you're taking, as well as your health history and any chronic conditions you have. We're fully capable of diagnosing and treating ED here at American Male Medical.