I don't think I've ever allowed myself to be aroused during an actual medical exam - but afterwards, that's a different matter!
There was the time that I was about 14-15yo, and was examined by a panel of all-male dermatologists (who were in Melbourne for a convention, I think). I was required beforehand to first undress and then put on a hospital-type gown, flimsily tied at the back. When these medicos were ready for me, I was summoned from an adjoining room. Instantly I found myself in front of a row of gazing men in suits. One of them acted as spokesperson, and told me what to do. As I recall, I was asked to first lower the gown from my shoulders and then turn myself right around, thus showing them my naked upper torso, front and back. But eventually, the medico who was the spokesperson instructed me to untie the gown and turn around, and to take the gown off. So now I was totally naked. They gazed at my back-view for a few moments, then I was asked to turn back and face them briefly. They again gazed for a short while, and then I was told to put the gown back on. They had seen enough. I could go and get dressed.
I do remember that at one point my embarrassment showed in my demeanour (not in any other way). One of the medicos smiled, and told me: ‘Don’t worry, we're doctors!' As if that changed things much! I can wonder today whether there were any gay doctors and/or ephebophiliacs (look it up!) among them! If so, I trust that they were happy in their work that day!
The other arousing exam I had in my teens, when I was about 18-19yo, was by an ENT specialist. (You should know that I have a mouth and throat fetish - call it odontophilia.) He was absolutely thorough! He used his otoscope and nasal speculum and tongue depressor and little stemmed mirror to explore every cranny of my ears, nose, throat and pharynx. I hadn't expected this - I thought I was there just to get some wax syringed from my ears.
- Ken