WORLD HISTORY

Detailed explanation-1: -Al Razi is considered the “original portrayer” of smallpox. While serving as the Chief Physician in Baghdad, he was the first to describe smallpox and to differentiate it from measles. He wrote a treatise on the subject: “Kitab al Judari wa al Hasbah”. This book was translated more than dozen times into Latin.

Detailed explanation-2: -It was his descriptive and original clinical histories in the Hippocratic tradition that have gained him respect throughout history. Rhazes is well-known for his description of smallpox and measles, the first authentic account of these diseases (Garrison 129).

Detailed explanation-3: -Summary: Al Razi was the first physician in history to describe in detail the symptoms and signs of smallpox and measles based upon clinical examination. He was the first to dis-tinguish between the two diseases by what is called now ‘the differential diagnosis’ in “The Book on Smallpox and Measles".

Detailed explanation-4: -Rhazes opposed Hippocrates’ and Galen’s concept of the 4 humors. In his landmark “A Treatise on the Small-Pox and Measles, ‘’ Rhazes recognized that the 2 were separate diseases.

Detailed explanation-5: -Rhazes wrote the first known medical description of smallpox in about 910 AD. He described the symptoms, proposed a theory for the pathology and gave directions for the treatment of the condition. He stated that survival from smallpox infection prevented an individual from acquiring the disease again.