I have always considered ME/CFS to be a close sister to MS, even though neurologists will go to great pains to erect Berlin Walls with barbed wire and guard dogs between the two illnesses. That's because they can see the disease process in MRIs of MS patients. There is no such evidence with ME/CFS, so we are left out as the unwanted stepchild. Neurologists are usually about most things, so they don't want to take any chances about being dolts about ME/CFS. But if you were born in the spring months you are more likely to contract MS later in life. The mother having low Vitamin D in the last trimester seems to be a potent risk factor. If you were gestating during those last three months when it was dark, gloomy and cold out it might affect your risk. I have ME/CFS and I was born in early May. What month were you born?