Schizophrenia can be traced back to a genetic disorder in some situations. If a person's mother or father or grandmother or grandfather had it, it is probably a hereditary factor or gene that made them more apt to come down with it. Sometimes, it can occur genetically without any parent or grandparent having it just because of a failed gene. The exact cause of Schizophrenia is not known but there are scenarios that many who suffer from it do share so it is highly likely that a genetic disorder does pave the way for a person to have it. Sometimes a traumatic event can be the trigger that tips the boat.
Schizophrenia is a disease that doesn't have clear cut answers all the time. The reason one gets it and another person doesn't is still a mystery. The main thing to remember is that if one does have it, a professional must treat it or it is very dangerous. There are treatment plans and management plans that are available for those who have Schizophrenia but they must committ to going and seeking help or may even have to be forced to as they live in unreality and may not be capable of seeking help on their own.