In researching over 1000 individuals of a vast range of backgrounds, Stompe and colleagues (2006) found that<unk> ty remains as the second most common delusion after persecutory delusions. A variation in the occurrence of<unk> ty delusions in schizophrenic patients across cultures has also been observed. In research done by Appelbaum et al. it has been found that GDs appeared more commonly in patients with bipolar disorder (59%) than in patients with schizophrenia (49%), followed by presence in substance misuse disorder patients (30%) and depressed patients (21%). A relationship has been claimed between the age of onset of bipolar disorder and the occurrence of GDs. According to Carlson et al. (2000),<unk>  appeared in 74% of the patients who were 21 or younger at the time of the onset, while they occurred only in 40% of individuals 30 years or older at the time of the onset. Prevalence Research suggests that the severity of the delusions of grandeur is directly related to a higher self-esteem in individuals and inversely related to any individual’s severity of depression and negative self-evaluations. Lucas et al. found that there is no significant gender difference in the establishment of<unk>  However, there is a claim that ‘the particular content of<unk> ’ may be variable across both genders. Also, it has been noted that the presence of GDs in people with at least grammar or high school education was greater than lesser educated persons. Similarly, the presence of<unk>  in individuals who are the eldest is greater than in individuals who are the youngest of their siblings.
Grandiose delusions
Musical hallucinations
Callous and unemotional traits
Ideas and delusions of reference
Schizoid avoidant behavior
Musical anhedonia
Racing thoughts
Homicidal ideation