I have Parkinson s with Dynstonia with Arnold Chiari Malformation and HX of Stroke, Hypertrophy and Arthritis, IBS, Gerd and Diabetes which left me with a lot of vision issues considered legally Blind-Hemionopsia/Multiple imaging. I suffer from Dry Eye, Dry Nasal Passages, and Dry mouth and Dry skin. At one time, the eye Dr. mentioned the possibility of Sjorgren Disease but never tested. I have several relatives diagnosed with different auto-immune diseases. Do you think it is reasonable for me to ask my Doctor to do a ANA Blood Test to check for auto-immune diseases or am I being to suspicious