If an employee comes to you requesting an accommodation for a purported disability, don't expend a lot of brain cells contemplating whether the employee is disabled.
The Americans with Disabilities Act requires that employers accommodate employees with disabilities if doing so will allow the employee to perform the essential functions of her job without creating undue hardship for the employer.
A covered employee could also use FMLA to "meet routine family medical care needs, including for medical and dental appointments of the employee or a son, daughter, spouse, or grandchild of the employee."