Reprinted from TSA website:
http://www.tsa.gov/public/display?theme=156
Persons with Disabilities & Medical Conditions
In order to assist persons with disabilities or medical concerns, TSA has developed guidelines with input from various groups. We then trained our airport screeners in the methodology needed to ensure secure and comfortable screening at all TSA checkpoints.
Please refer to the links below to assist you as you make travel preparations.
Before You Go http://www.tsa.gov/public/interapp/editorial/editorial_1057.xml
Tips for the Screening Process https://www.tsa.gov/travel/security-screening
Please refer to this page for information on the following conditions
Mobility Disabilities http://www.tsa.gov/public/interapp/editorial/editorial_1371.xml
Hearing Disabilities http://www.tsa.gov/public/interapp/editorial/editorial_1380.xml
Visual Disabilities http://www.tsa.gov/public/interapp/editorial/editorial_1373.xml
Hidden Disabilities http://www.tsa.gov/public/interapp/editorial/editorial_1374.xml
Pacemakers, Defibrillators, Other Implanted Medical Devices, & Metal Implants http://www.tsa.gov/public/interapp/editorial/editorial_1376.xml
Supplemental Personal Medical Oxygen http://www.tsa.gov/public/interapp/editorial/editorial_1568.xml
Diabetes http://www.tsa.gov/public/interapp/editorial/editorial_1375.xml
Medications http://www.tsa.gov/public/interapp/editorial/editorial_1059.xml
Assistive Devices and Mobility Aids
Prosthetic Devices, Casts, and Body Braces http://www.tsa.gov/public/interapp/editorial/editorial_1370.xml
Walkers, Crutches, and Canes http://www.tsa.gov/public/interapp/editorial/editorial_1569.xml
Augmentation Devices http://www.tsa.gov/public/interapp/editorial/editorial_1570.xml
Orthopedic Shoes, Support Appliances, and Exterior Medical Devices http://www.tsa.gov/public/interapp/editorial/editorial_1571.xml
Service Animals http://www.tsa.gov/public/interapp/editorial/editorial_1056.xml
Children with Disabilities http://www.tsa.gov/public/interapp/editorial/editorial_1572.xml
Medical Conditions and Special Situations http://www.tsa.gov/public/interapp/editorial/editorial_1573.xml
Tips for passengers with disabilities for the other transportation modes (Passenger Rail, Passenger Vessels, Highway & Mass Transit) are under development. Please visit this site frequently for updates and additions.
Contact TSA: https://www.tsa.gov/contact/contact-forms