This is GREAT!
My brother had encephalitis as a teen, which resulted in debilitating depression, immune system and neurological issues that persist to a slight degree even 16+ years later. When he was just returning to a somewhat “normal” life and attending college, he confided in a great deal of frustration with this sort of issue. My suggestion was this response, which he got a kick out of and reportedly worked great at getting the busybodies to back off.
“So, what EXACTLY is wrong with you.”
“Demonic possession.”
To all of you who are dealing with non-obvious or intermittent disabilities, I raise a glass to you; I know from my brother and another relative who suffered a TBI that left lasting issues that the comments and behavior from “outsiders” can be worse than the disabilities themselves in some cases.