I wish there was somebody here more knowledgeable about HR issues and the Americans with Disabilities Act than me, but I'm pretty sure that it's illegal to fire you because you have (what they would consider to be) a disability (at least in America).
However, if you are having issues in your job that relate to your "disability" that's a little less clear to me.
I think the three major questions would be:
1. Is AS considered a disability in the legal sense?
2. If you disclose a disability, are employers required to make reasonable accomodations for you to complete your job in light of your disability.
3. Does your disability prevent you from performing the essential job functions.
I'm thinking of the man in a wheelchair who wanted to be a law enforcement officer. The agency wouldn't hire him (and they didn't have to) because he couldn't perform the essential job functions (chasing and arresting suspects, etc) and there were no accomodations the agency could make to allow him to do those things.
In summary, if you get fired or reprimanded strictly because you disclose a disability to your employer, the employer is breaking the law.
Okay, here's a link to an overview of the Americans with Disabilities Act:
http://www.usdoj.gov/crt/ada/cguide.htm
Under their broad definition, it appears that AS would qualify as a disability in regards to this protection.