Al-razi birth and death

10th-century Iranian physician and polymath

This article is about the 10th-century physician and polymath. For the 12th-century theologian and polymath, see Fakhr al-Din al-Razi.

For other uses, see Razi (disambiguation).

Abū Bakr al-Rāzī
Portrait of Rhazes
Born	864 or 865 CE 250 or 251 AH Ray (Iran)
Died	925 (aged 60–61) CE or 935 (aged 70–71) CE 313 or 323 AH Ray (Iran)
Era	Islamic Golden Age
Language	Arabic (writings)
Main interests	Medicine, philosophy, alchemy, criticism of religion
Notable ideas	The first to write up limited or extensive notes on diseases such as smallpox and chickenpox, a pioneer in ophthalmology, author of the first book on pediatrics, making leading contributions in inorganic and organic chemistry, also the author of several philosophical works.

Abū Bakr al-Rāzī (full name: أبو بکر محمد بن زکریاء الرازي, Abū Bakr Muḥammad ibn Zakariyyāʾ