why a person get crazy?

Answer 1

Some people are born with mental disorders. Most mental disorders have a high chance of running in the family, so they are genetic. That's the reason they ask you if your family has a mental disorder history, because you might get it too.

In most of the cases though, people become "crazy" due to a trauma. These traumas are usually negative experiences, and can be determined by different factors, for example:

- being molested as a child
- being robbed as a child
- seeing someone die
- having a car accident
- falling and hurting yourself etc.

For some people, the loss of beloved ones, or accidents, can cause severe affections of the mind and psyche, and they start suffering from different mental illnesses.

Certain mental illnesses aren't caused by traumas, but by a physical stimulus. For example, if you're in a car accident and hit your head badly, a certain part of your brain can be affected in such way that you either get amnesia, forget how to talk, cannot move, forget the names of the people around you, have severe loss of memory (you don't remember what you were doing 30 seconds ago, if you ate, if you have children etc), can affect intelligence or other areas of functioning.

Hope my answer was clear enough.

Answer 2

because he/she stares at the moon for a long period of time