The TSA has created a “card” travelers can fill out that briefly describes their conditions and needs to TSA security agents.
Here’s the link to the PDF version of the card you can fill out, print out, and carry with you when you fly in the USA.
I haven’t flown since this card was released, so I don’t know how much good it does when you’re actually in line dealing with individual TSA security agents. I’ll be doing an international trip in May, and will report back then.
In the meantime, has anyone here used this card? If so, please post a comment here so that we can all learn from your experience!

hmm…..thanks for that; I’ll be looking into this right away as I’ve got a $%#@-load of flying coming-up. I’ll keep you posted.