We are talked about grandiose delusions in class this week.
Apparently, grandiose delusions are very common. It is the second most common type of delusion and affects people suffering from various different types of psychological disorders such as bipolar disorder and schizophrenia. Some of them actually have basis in physical disorders like Parkinson's disease or even vitamin deficiencies. So any condition affecting the function of the brain can actually lead to this type of delusion. It doesn't necessarily have to be a sign of a mental disorder.
Obviously, grandiose delusions are unhealthy, but they do have some benefits as well. For example, it boosts an individual's self esteem greatly. And some people actually develop it as a natural response to extremely low self esteem and depression. It can actually be very destabilizing to treat someone's grandiose delusions and can harm a person's psychology much more than the delusions.