Benjamin Rush,
Medical Inquiries and Observations…
“ However diversified they may be in their symptoms, the system, in both diseases, is generally under a state of undue excitement or great depression, and in most cases requires the abstraction of stimulus in a greater or less degree, or in a sudden or gradual manner. There can never be any danger of the people injuring themselves by mistaking any other disease for an epidemic yellow fever or plague, for no other febrile disease can prevail with them. ”
