How can you get someone ineligible for social security disability income?

There are people who are eligible for social security disability income because they have a traumatic brain injury.  Having what you perhaps see as "maybe an undiagnosed mental illness" may be, from a clinical perspective, as interfering with cognitive processes.   

Your opinion does not hold as much sway as a psychologist hired by the government.  The psychologist hired by the government would only say the person is clinically eligible if they are clinically eligible. 

Invisible disabilities are hard to understand.  Even parents and siblings of a person with an invisible disability can simply not understand.  Just so you know, given that you are not a psychologist.  Giving a person with an invisible disability grief is unnecessary and in many situations it is unkind. 

If you strongly suspect someone is committing fraud then you could call your local social security office and voice your concerns. It's unlikely anything will be done, but you might get some personal satisfaction out of it.  If you are a taxpayer then fraud involving taxpayer money is your business. 

Stay out of other people’s lives. You don’t have all the facts I am sure.