A temporary condition can be a disability covered by the Americans With Disabilities Act, often referred to as the "ADA." Following enactment of the ADA Amendments Act in 2008 the EEOC issued some regulations that, among other things, provide that an impairment lasting less than six months can constitute a disability covered by the ADA.
This doesn't mean that any condition can be a disability. The condition has to be "sufficiently severe" and it must substantially limit a person's ability to engage or participate in a major life activity. In other words, the condition must be pretty bad ("sufficiently severe") and it must have a pretty big and important impact on the person's day-to-day life ("major life activity").
The scope of protections offered by the ADA (and its Kentucky law counterpart) are very much determined by the particular and specific facts involved. You should consult with a knowledgeable and experienced ADA and disability discrimination lawyer. Contact Lexington, Kentucky ADA and disability discrimination lawyer Robert Abell at 859-254-7076.