http://www.tsa.gov/press/releases/2011/1222.shtm
The Transportation Security Administration (TSA) announced the launch of TSA Cares today, a new helpline number designed to assist travelers with disabilities and medical conditions, prior to getting to the airport. Travelers may call TSA Cares toll free at 1-855-787-2227 prior to traveling with questions about screening policies, procedures and what to expect at the security checkpoint......
...When a passenger with a disability or medical condition calls TSA Cares, a representative will provide assistance, either with information about screening that is relevant to the passenger’s specific disability or medical condition, or the passenger may be referred to disability experts at TSA. TSA recommends that passengers call approximately 72 hours ahead of travel so that TSA Cares has the opportunity to coordinate checkpoint support with a TSA Customer Service Manager located at the airport when necessary....
So what pray tell is a "disability expert"?
...All travelers may ask to speak to a TSA supervisor if questions about screening procedures arise while at the security checkpoint....
Which still means that a pax could be subject to a TSO potentially* practicing medicine without a license
*I say "potentially" as their may be (n.b. may be) a TSO out there who is also an MD