Science & technology

Al-Razi distinguishes smallpox from measles

c. 910s

Around 910 AD, the Persian physician and philosopher Abu Bakr al-Razi, known in Europe as Rhazes, who ran hospitals in Rayy and Baghdad, wrote a short treatise on smallpox and measles, Kitab al-Judari wa al-Hasba, the first clear clinical description of the two diseases and the first to show that they are separate. He described the symptoms, such as fever, back pain, and the course of the rash, and gave advice on treatment and on the immunity that survivors gain. His encyclopaedia of medicine, al-Hawi, and his Latin-translated works were standard textbooks in European universities for centuries.

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This moment belongs to the Medieval world (500 CE to 1500 CE), kingdoms, faiths and trade routes. You can also browse everything in the 10th century.