C., T. E., Jr.
THE FIRST DESCRIPTION OF CHICKENPOX AS A DISEASE, BY WILLIAM HEBERDEN THE ELDER (1710-1801) IN 1767
Pediatrics 1970 45: 588
English physician William Heberden was the first to give a detailed description that distinguished chickenpox from smallpox. He wrote:
These pocks break out on manywithout any illness or previous sign: in others they are precededby a little degree of chillness, lassitude, cough, broken sleep,wandering pains, loss of appetite and feverishness for threedays… Mostof them are of the common size of the smallpox but some areless. I never saw them confluent nor very numerous. The greatestnumber which I ever observed was about twelve in the face, andtwo hundred over the rest of the body.
Heberden also noted that those who had previously had chickenpox “were not capable of having it again.”