Harrassment and Discrimination in the work place

First we have to understand that what you consider "harassment", your employer considers managing you as an employee.  When an employee suffers from a disability, the employer is required to make a "reasonable accommodation" which permits the employee to perform the "essential functions" of the job.  You have not provided enough information about your job for me to make any determination regarding what the "essential functions" may be, but in most cases one of the "essential functions" is for the employee to be present at the workplace.  Your employer has apparently concluded that setting you up with a "work from home situation" is not a reasonable accommodation.  Also, if your condition leaves you exhausted and you have to lie down, your illness may prevent you from performing the essential functions of your job, in which case you may not be protected under the law.  The fact you have been "written up" seems to indicate your employer believes you are not performing the essential functions of the job as required. Since your condition is quite rare, (and I'm assuming you have medical documentation for the illness), I suggest you check with the Tennessee Human Rights Commission and discuss your situation with the professionals at the Commission.