Genetics, birth defects, physical injuries, chemical intake are known reasons. There are probably others.
A chemical imbalance in anything from the Brain to maybe an Organ.
A chemical imbalance
Munchausen syndrome - a type of factitious disorder, or mental illness, in which a person repeatedly acts as if he or she has a physical or mental disorder when, in truth, he or she has caused the symptoms.
Bipolar disorder
Emotional disturbances are the cause for various mental problems. Misunderstandings and lack of communication is the primary cause of emotional disturbances.
Simply put a disorder can cause a disability. A disability (meaning impaired, as in physical functioning) is a physical or mental impairment that prevents an individual functioning as most people could. A disorder (an ailment that affects the function of mind or body) is the name given to a disease which may sometimes manifest in such a was as to cause a disability. Not all disorders (eg an eating disorder) cause a disability
Marriage, per se, does not cause any psychological disorder.
Mental disorder is a mental or bodily condition marked primarily by sufficient disorganization of personality, mind, and emotions to seriously impair the normal psychological functioning of the individual.
In mental disorders, Brief Psychotic Disorder, Schizoaffective Disorder, Schizophreniform Disorder, Schizophrenia, and Delusional Disorder can cause delusions. In some cases, severe mania or depression can cause delusions.
Schizophrenia is a mental disorder which can cause repetitive noises to "set off" a patient.
No, bipolar disorder is not linked to the Y chromosome. It is a complex mental health condition believed to be influenced by a combination of genetic, environmental, and neurobiological factors. The exact cause of bipolar disorder is not fully understood.
The cause of schizoaffective disorder remains unknown and subject to continuing speculation.Some investigators believe schizoaffective disorder.may be caused by a.biological predisposition. Others disagree.