Differentiation of smallpox and measles
Distinción entre viruela y sarampión
- Date
- c. 910 · confidence medium
- Place
- Rayy, Tehran, Iran
- Credited to
- Abu Bakr al-Razi (Rhazes)
- People
- 👤 Al-Razi866–925
- Field
- Life & health
What was discovered
His treatise Kitab al-Judari wa-l-Hasba is the first clinical account distinguishing smallpox from measles by their symptoms and course. It was translated and reprinted in Europe until the 19th century.
Al-Razi directed hospitals in Rayy and Baghdad; his Kitab al-Hawi records his own case histories.
What it led to
- differential diagnosis of eruptive fevers
- monographs on a single disease
- observation-based clinical medicine