Sigmund Freud died of a lethal dose of morphine administered at his request by his friend and physician Max Schur. Freud had been suffering agonizing pain caused by an inoperable canceroustumour in his eye socket and cheek. The cancer had begun as a lesion in his mouth that he discovered in 1923.
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The Editors of Encyclopaedia Britannica. "What did Sigmund Freud die of?". Encyclopedia Britannica, 12 Feb. 2025, https://www.britannica.com/question/What-did-Sigmund-Freud-die-of. Accessed 1 April 2025.