Issues with security depend on where you're traveling from. If you're in the US, here's a link to the the
TSA - Traveling with Disabilities page. Security screening won't be waived, but make sure you communicate your condition to the screeners.
If you have documentation from your doctor, that helps. I've seen people with cards that indicate they have conditions that prevent certain types of screening or that they'll set off the medical detector. If you ask your doctor, they should be able to walk you through the best way to travel.