Do you face stigma (or discrimination) in your family due to a mental illness that you have or that someone you love has?

My family is very ignorant when it comes to dealing with my Autism. Family gatherings (which happen quite frequently) are super uncomfortable for me and nobody seems to get why, despite me explaining it over and over again. My older brother won't even acknowledge me having Asperger's, he just thinks I'm "being weird" on purpose.