No,I've never asked my neuro about it,but since I have an appt with him Monday,I will write that down as a question to ask him! I'll be getting back with the forum to report on that appt and will let you know what his reply is to that question!
It is true that once your immune system is compromised you can,for instance,be more susceptible to other autoimmune diseases.It's not uncommon for example, for a person who is diabetic to also have MS and vice versa.
I've often wondered the same thing. Have you asked your neurologist if one condition makes you more likely to have another? There are others here who have similar things going on: like MS and Myasthenia Gravis for instance,,,