How do i react when people call me a "freak"? :(?

I have ADD, mild OCD, restless leg syndrome, metabollic syndrome, depression, anxiety, and im an alcoholic. I cant walk out my front door without being called a freak or getting stared at by almost everyone. Why do they stare? Is it the way i act or walk? does any of my illnesses contribute to this? do i act odd or seem different because of these? i feel like people know im mentally ill, so i just avoid going outside alltogether.