Disabilities may fall into one of the following diagnostic categories but may also be present in additional ways:

The Americans with Disability Act (ADA) defines disability as:

Individuals who fall into the first two categories may be eligible for accommodations if they are experiencing barriers because of the interaction of between their disability and an inaccessible aspect of their education. Reasonable accommodations are not determined based on disability or diagnosis alone. A student’s disability plus any specific academic impacts shapes what accommodations may be reasonable.