"Although many students say to me that they’ve had a really positive experience of disclosing their disability to employers, others have told me about the negative experiences they’ve had. I’ve heard from people saying their prospective employer assumed that their condition would affect them far more than it actually does and were worried that they’d be taking time off work a lot. Some people have said that as soon as they say to an employer they have a disability, they feel like the employer is no longer interested."
Edmund Lewis, University of Westminster who gives a good overview of what to think about when considering disclosure.