Note 23 — THE GREAT EPIDEMICS OF THE MIDDLE AGES.

Aaron, a contemporary of Paulus d’Aegineta, speaks only briefly of the malady in his works. Rhazes mentions measles in his works, giving a clear account of its diagnosis and treatment. He says that when the patient experiences great anxiety and falls into a syncope, he should be plunged into a cold bath and then be vigorously rubbed over the skin to the end of provoking the eruption. Avicenna did not recognize measles, considering it only a billious fever or small pox. Constantine, the African, follows the example of Avicenna and reproduces the opinion of the Arabian School without comments.