Believe it or not, Tchaikovsky was considered a homosexual and at that time of conservative Russian society, homosexual can be prosecuted.
Although his dead was left much speculations around, but one of the consipiracy theory suggested that Tchaikovsky was ordered to kill himself by none other than the Russian Tsar.
Looking back at the history, most of the famous composers died early such as Chopin, Mozart, Franz Schubert, Tchaikovsky and Mendelsson
Some heavy hitter politcos from the School of Jurisprudence where Tchaikovsky studied as a young man ordered him to kill himself or else they would reveal his sexuality to the Tzar. They thought they were ‘helping’ him preserve his reputation. Tchaikovsky should have told them to go to hell. The Tzar would have worked something out and not exile the most world famous Russian next to Tolstoy.
Cholera takes much longer to develop then it supposedly did in a week with the ‘drank unboiled water’ story that his brother Modest and his doctors fabricated. Since the fall of the Soviet Union more evidence surfaced.