Gaius Julius Ceasar Augustus Germanicus, often refered to simply as Caligula (31 July 12 AD – 22 January 41 AD), was one of Rome's most infamous tyrants and is widely believed to have been insane - historical records of his rule are scarce but those that survive hint at him having enjoyed a relatively properious reign for his first two years as Emperor but after this period the focus rapidly changed to his cruelty, sexual perversion and extragavence - although few (if any) of these claims can be stated as fact the name Caligula has become a symbol of decadence and madness in the public eye ever since. He is widely considered to have been a megalomaniac and malignant narcissist. who displayed all the signs and symptoms of someone suffering from both narcissistic personality disorder and borderline personality disorder with heavy histrionic, antisocial, and sadistic features. He also suffered from hyperthyroidism He may also have suffered from paranoid schizophrenia or schizoaffective disorder. Other health issues that Caligula may have had include meningitis, encephalitis, or epilsepsy.