Yes, and in my opinion, if the person you're talking to has no idea about mental illnesses, has never addressed it themselves or read up on it, then in all likelihood the only thing they have to go by are the basic stereotypes and preconceptions present in the society. Or maybe they have nothing at all to relate to about mental illness. Hence the person can only fall silent or conjure up false images in the mind. They might look at you funny. In all honesty, that's how I was too before my sister was diagnosed with schizophrenia and I began reading books about it. I remember reading a book about self esteem too, before that. Quite eye opening for me, at that time.