what is a mental disorder?
<answer> Health conditions involving changes in thinking, emotion or behavior. <context> Mental illness is nothing to be ashamed of. It is a medical problem, just like heart disease or diabetes. Mental illnesses are health conditions involving changes in thinking, emotion or behavior (or a combination of these). Mental illnesses are associated with distress and/or problems functioning in social, work or family activities. Mental illness is common. In a given year: