The medical treatises collected under Hippocrates' name are essential sources of information about the practice of medicine in antiquity and about Greek theories concerning the human body.

Of the Epidemics is a collection of Hippocrates' teachings passed down about how to diagnose and treat certain ancient maladies. It is an invaluable source for understanding the medicine of antiquity.

Hippocrates (c. 460 – c. 370 BC), was a Greek physician of the Age of Pericles (Classical Greece), and is considered one of the most outstanding figures in the history of medicine. He is referred to as the father of western medicine in recognition of his lasting contributions to the field as the founder of the Hippocratic School of Medicine. Hippocrates is commonly portrayed as the paragon of the ancient physician, credited with coining the Hippocratic Oath, still relevant and in use today. He is also credited with greatly advancing the systematic study of clinical medicine, summing up the medical knowledge of previous schools, and prescribing practices for physicians through the Hippocratic Corpus and other works.

Insomnolency, for the most part, especially in these fevers, and again a disposition to coma. The bowels, in all diseases, were disordered, and in a bad state, but worst of all in these. The urine, in most of them, was either thin and crude, yellow, and after a time with slight symptoms of concoction in a critical form, or having the proper thickness, but muddy, and neither settling nor subsiding; or having small and bad, and crude sediments; these being the worst of all.

• BOOK I.
• BOOK II.