How did Titus die? Do we have any historical sources that are less fanciful than the Babylonian Talmud, quoted below? Are there any other records of his symptoms prior to death?
According to the Babylonian Talmud (Gittin 56b), an insect flew into Titus's nose and picked at his brain for seven years. He noticed that the sound of a blacksmith hammering caused the ensuing pain to abate, so he paid for blacksmiths to hammer near him; however, the effect wore off and the insect resumed its gnawing. When he died, they opened his skull and found the insect had grown to the size of a bird. The Talmud gives this as the cause of his death and interprets it as divine retribution for his wicked actions.