I know probably dozens of Hohos w/ FMS. No non-Hohos.
My husband's parents claim to both have it, and they've been listening to the meetings on the phone for 10 years as a result and are avid letter-writers (no D2D). It used to affect only their religious activity, now it prevents them from doing anything--they are both on disability at 55 and 57 years of age. They say it's contagious and then invite people to their home. . .I say it's a crutch IN THEIR CASE.
For people who actually have this condition, I'm not doubting its existing or criticizing real diagnoses.