Always file a complaint. It's the only way we have to fight these goons.

If a passenger feels he or she has been discriminated against or treated unfairly by federal security checkpoint personnel, contact the TSA hotline at 1-866-289-9673 or submit a complaint via email to <TellTSA@dhs.gov>."

Also, if you have a medical condition, you can avail yourself of other complaint avenues as it is considered a disability and/or contact you medical condition. national organization (such as the American Diabetes Association, for example) who will go to bat for you.

http://www.tsa.gov/public/display?content=0900051980068400