Who wrote a medical encyclopedia that was translated into latin and widely used throughout Europe?

The medical encyclopedia you're thinking of is "On the Causes, Symptoms, and Treatment of Diseases", also known as "De Morborum Causis et Curatio", written by Avicenna.

* Avicenna (980-1037) was a Persian polymath, physician, and philosopher.

* His encyclopedia, originally written in Arabic, became a foundational text for medieval European medicine.

* It was translated into Latin and widely used throughout Europe for centuries, influencing medical education and practice.

While there were other important medical encyclopedias in the ancient world, Avicenna's work stood out for its comprehensiveness, organization, and influence on subsequent medical thought.