why do people feel need to talk their health (physical and mental) with laypeople and are suprised that they don't understand...

I mean, no offense, but if you get into such topics... you are gonna hear stupid things you don't want to hear. So either don't discuss, or don't care. You don't need to educate people about your condition.

(i think this goes to any topics in general... many things you simply don't have to discuss, if it's creating more ill feelings than it is helping).