What is the differences between anxiety, mood, and dilusional disorders?

An anxiety disorder is when an individual experiences
excessive amounts of worry beyond what is normally experienced in everyday life. The
anxiety typically lasts for 6 or more months before it is considered a disorder. The
worrying is very exaggerated and sometimes occurs for no reason at
all.

The term mood disorder refers to several disorders
including major depression, seasonal affective disorder, mania, and cyclothymia (mild
form of bipolar disorder). Individuals with these disorders experience moods that are
more severe than what is normal for everyday life. For instance, in major depression, an
individual may experience a persistent sad or empty mood and loss of interest in
activities that he or she once enjoyed.

A delusional
disorder is characterized by having one or more delusions of thinking that are
nonbizzare (not unusual). For instance, a person with a delusional disorder might
continually think that his or her partner is being unfaithful to him or her, when in
fact, there is no truth to that at all.