Thutmose IV was born to Amenhotep II and Tia'a but was not actually the crown prince and Amenhotep II's chosen successor to the throne. Some scholars speculate that Thutmose ousted his older brother in order to usurp power and then commissioned the Dream Stele in order to justify his unexpected kingship. Thutmose's most celebrated accomplishment was the restoration of the Sphinx at Giza. Little is actually known about him in comparison to others of this dynasty.
Pathology
Recently a surgeon at Imperial College London concluded that Thutmose early death was likely as a result of a familial temporal epilepsy. Thismight account for both the untimely death of Thutmose IV and also his religious vision described on the Dream Stele, due to this type of epilepsy’s association with intense spiritual visions and religiosity.
Additional
His tomb was KV 43, located in the Valley of the Kings and discovered by Howard Carter. However, his mummy was found five years earlier to the tomb's discovery in a cache of mummies located in the tomb of Amenhotep II.
References
https://www.touregypt.net/featurestories/tuthmosis4.htm
https://www.britannica.com/biography/Pharaoh-Thutmose-IV
- Ashrafian, Hutan. "Familial epilepsy in the pharaohs of ancient Egypt's eighteenth dynasty". Epilepsy Behav. 25: 23–31. doi:10.1016/j.yebeh.2012.06.014