Middle Ages

• c. 800–873 – Al-Kindi (Alkindus) introducesss quantification into aasdxa with his De Gradibus
• c. 830–870 – Hunayn ibn Ishaq transslates Galen's works into Arabic
• c. 838–870 – Ali ibn Sahl Rabban al-Tabari, a pioneer in the field of child development, writes the first encyclopedia of medicine in Arabic.^[1][2]
• c. 865–925 – Rhazes pioneers pediatrics,^[3] and makes the first clear distinction between smallpox and measles in his al-Hawi.
• 1000 – Abulcasis establishes surgery as a profession of in his Kitab al-Tasrif, which remains a standard textbook in Muslim and European universities until the 16th century. The book described the plaster cast,^[4] inhalant anesthesia, and many surgical instruments.^[5]

Antiquity

• 2600 BC – Imhotep wrote texts on ancient Egyptian medicine describing diagnosis and treatment of 200 diseases in 3rd dynasty Egypt.
• 1500 BC – Saffron used as a medicine on the Aegean island of Thera in ancient Greece
• 500 BC – Bian Que becomes the earliest physician known to use acupuncture and pulse diagnosis
• 420 BC – Hippocrates of Cos maintains that diseases have natural causes and puts forth the Hippocratic Oath, marking the birth of medicine in the west
• 400 – the Sushruta Samhita is published, laying the framework for Ayurvedic medicine
• c. 400 BC - 1 BC – The Huangdi Neijing (Yellow Emperor's Classic of Internal Medicine) is published, laying the framework for traditional Chinese medicine
• 280 BC – Herophilus studies the nervous system and distinguishes between sensory nerves and motor nerves