What are the different types of delusions and how does one identify them?

A delusion is a false belief based on an incorrect interpretation of reality.  People who suffer from persecutory delusions falsely believe that someone or something is attempting to harm them.  With erotomanic delusions, people believe that someone famous is in love with them.  Those with grandiose delusions have an exaggerated sense of self-worth or power.  People with jealous delusions believe their significant other is being unfaithful without evidence.  Somatic delusions involve a false belief that one has a physical or medical problem.  And people with mixed type have a combination of two or more types of delusions.