Answer :
people tend to fear things they do not fully understand or that are different, and I believe that is the case here.
People fear or sometimes make fun of mental illnesses because of their lack of understanding about how the illness affects the person and knowing the truth of a disorder is frightening so people would rather avoid it than be confronted with it. Making fun of someone and laughing is a defense mechanism of those who do not understand because they are unsure of how to react.
Answer: Lack of understanding and knowing the truth of a disorder is frightening
miracles; live