ask them
No
YOU can't tell them. A mental health professional has to asses and diagnose them.
Mental illnesses are mostly genetic. If there are no genetic markers then the chances of someone experiencing a mental illness sometime in their lives is not likely. If symptoms are present a doctor should be contacted immediately.
The word psychological describes someone's mental or emotional state. This term is used when someone has a mental illness instead of a physical ailment.
No. That's called fantasy.
The term "mental illness" refers to someone who has a mental (brain) related deficiency. Some of these mental illnesses affect your mood, behavior or actions.
Sinusitis is not caused by mental illness. Mental illness can be caused by sinusitis infection.
not guilty by reason of mental illness
Mental illness predates recorded history.
This is a tricky one, as it depends on the individual as well as what illness it is that they have. More information would be nice, if possible
Mental illness can take many forms and names, but tends to refer to a medical condition that impairs the ability for someone to think, feel, and relate to others, and their ability to function in society.