One common question I get from readers, in one form or another, is essentially this: How can I test myself to find out the root cause of and solutions for my erectile dysfunction and which way to go? Many guys feel overwhelmed with trying to figure out what is going on downstrairs and underwhelmed with their doctor's communication and/or knowledge of the matter. The doctor usually goes for the quick fix - Viagra or Cialis - and a comment that erectile dysfunction is just part of aging. (These PDE5 Inhibitors are full of side effects and have debatable long term safety, as I discuss in my link on The Dangers of Cialis and Viagra.)
Plus, as I discuss elsewhere on my site, an erection is a surprisingly complex physical process that involves the nervous, neurotransmitter, endocrine (hormonal), circulatory and muscular systems. Most middle-aged and senior males usually have more than one problem occurring simultaneously and so just throwing a medication after the problem only helps so much (and does not deal with the root of the problem).
The bottom line is that you need to find a good doctor, of course, and perhaps try a few things yourself. Below are some tests that you can do yourself to try to learn more about any loss of erectile strength.
CAUTION: Even though it is uncomfortable, you should always go to your doctor with erectile dysfunction, since it is a medical condition and can be a sign of heart disease or other significant issues.