Hippocrates of Cos or Hippokrates of Kos (Greek: Ἱπποκράτης; ca. 460 BC – ca. 370 BC) was an ancient Greek physician of the Age of Pericles (Classical Athens), 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. This intellectual school revolutionized medicine in ancient Greece, establishing it as a discipline distinct from other fields that it had traditionally been associated with (notably theurgy and philosophy), thus establishing medicine as a profession.

However, the achievements of the writers of the Corpus, the practitioners of Hippocratic medicine, and the actions of Hippocrates himself are often commingled; thus very little is known about what Hippocrates actually thought, wrote, and did. There are also claims that point to Imhotep of ancient Egypt as history's first physician. Nevertheless, Hippocrates is commonly portrayed as the paragon of the ancient physician. In particular, he is 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.

Historians agree that Hippocrates was born around the year 460 BC on the Greek island of Kos (Cos), and became a famous ambassador for medicine against the strong opposing infrastructure of Greece. For this opposition he endured a twenty year prison sentence where he wrote very well known medical publications such as The Complicated Body, encompassing many of the things we know to be true today. Other biographical information, however, is likely to be untrue.

Soranus of Ephesus, a 2nd century Greek gynecologist, was Hippocrates' first biographer and is the source of most information on Hippocrates' person. Information about Hippocrates can also be found in the writings of Aristotle, which date from the 4th century BC, in the Suda of the 10th century AD, and in the works of John Tzetzes, which date from the 12th century AD.

Soranus wrote that Hippocrates' father was Heraclides, a physician; his mother was Praxitela, daughter of Tizane. The two sons of Hippocrates, Thessalus and Draco, and his son - in - law, Polybus, were his students. According to Galen, a later physician, Polybus was Hippocrates' true successor, while Thessalus and Draco each had a son named Hippocrates.

Soranus said that Hippocrates learned medicine from his father and grandfather, and studied other subjects with Democritus and Gorgias. Hippocrates was probably trained at the asklepieion of Kos, and took lessons from the Thracian physician Herodicus of Selymbria. The only contemporaneous mention of Hippocrates is in Plato's dialogue Protagoras, where Plato describes Hippocrates as "Hippocrates of Kos, the Asclepiad." Hippocrates taught and practiced medicine throughout his life, traveling at least as far as Thessaly, Thrace, and the Sea of Marmara. He probably died in Larissa at the age of 83 or 90, though some accounts say he lived to be well over 100; several different accounts of his death exist.

Hippocrates is credited with being the first person to believe that diseases were caused naturally and not as a result of superstition, and gods. Hippocrates was credited by the disciples of Pythagoras of allying philosophy and medicine. He separated the discipline of medicine from religion, believing and arguing that disease was not a punishment inflicted by the gods but rather the product of environmental factors, diet, and living habits. Indeed there is not a single mention of a mystical illness in the entirety of the Hippocratic Corpus. However, Hippocrates did work with many convictions that were based on what is now known to be incorrect anatomy and physiology, such as Humorism.

Ancient Greek schools of medicine were split (into the Knidian and Koan) on how to deal with disease. The Knidian school of medicine focused on diagnosis. Medicine at the time of Hippocrates knew almost nothing of human anatomy and physiology because of the Greek taboo forbidding the dissection of humans. The Knidian school consequently failed to distinguish when one disease caused many possible series of symptoms. The Hippocratic school or Koan school achieved greater success by applying general diagnoses and passive treatments. Its focus was on patient care and prognosis, not diagnosis. It could effectively treat diseases and allowed for a great development in clinical practice.

Hippocratic medicine and its philosophy are far removed from that of modern medicine. Now, the physician focuses on specific diagnosis and specialized treatment, both of which were espoused by the Knidian school. This shift in medical thought since Hippocrates' day has caused serious criticism over the past two millennia, with the passivity of Hippocratic treatment being the subject of particularly strong denunciations; for example, the French doctor M.S. Houdart called the Hippocratic treatment a "meditation upon death".

Another important concept in Hippocratic medicine was that of a crisis, a point in the progression of disease at which either the illness would begin to triumph and the patient would succumb to death, or the opposite would occur and natural processes would make the patient recover. After a crisis, a relapse might follow, and then another deciding crisis. According to this doctrine, crises tend to occur on critical days, which were supposed to be a fixed time after the contraction of a disease. If a crisis occurred on a day far from a critical day, a relapse might be expected. Galen believed that this idea originated with Hippocrates, though it is possible that it predated him.

Hippocratic medicine was humble and passive. The therapeutic approach was based on "the healing power of nature" ("vis medicatrix naturae" in Latin). According to this doctrine, the body contains within itself the power to re-balance the four humours and heal itself (physis). Hippocratic therapy focused on simply easing this natural process. To this end, Hippocrates believed "rest and immobilization [were] of capital importance." In general, the Hippocratic medicine was very kind to the patient; treatment was gentle, and emphasized keeping the patient clean and sterile. For example, only clean water or wine were ever used on wounds, though "dry" treatment was preferable. Soothing balms were sometimes employed.

Hippocrates was reluctant to administer drugs and engage in specialized treatment that might prove to be wrongly chosen; generalized therapy followed a generalized diagnosis. However, potent drugs were used on certain occasions. This passive approach was very successful in treating relatively simple ailments such as broken bones which required traction to stretch the skeletal system and relieve pressure on the injured area. The Hippocratic bench and other devices were used to this end.

One of the strengths of Hippocratic medicine was its emphasis on prognosis. At Hippocrates' time, medicinal therapy was quite immature, and often the best thing that physicians could do was to evaluate an illness and predict its likely progression based upon data collected in detailed case histories.

Hippocratic medicine was notable for its strict professionalism, discipline, and rigorous practice. The Hippocratic work On the Physician recommends that physicians always be well - kempt, honest, calm, understanding, and serious. The Hippocratic physician paid careful attention to all aspects of his practice: he followed detailed specifications for, "lighting, personnel, instruments, positioning of the patient, and techniques of bandaging and splinting" in the ancient operating room. He even kept his fingernails to a precise length.

The Hippocratic School gave importance to the clinical doctrines of observation and documentation. These doctrines dictate that physicians record their findings and their medicinal methods in a very clear and objective manner, so that these records may be passed down and employed by other physicians. Hippocrates made careful, regular note of many symptoms including complexion, pulse, fever, pains, movement, and excretions. He is said to have measured a patient's pulse when taking a case history to know if the patient lied. Hippocrates extended clinical observations into family history and environment. "To him medicine owes the art of clinical inspection and observation." For this reason, he may more properly be termed as the "Father of Medicine".

Hippocrates and his followers were first to describe many diseases and medical conditions. He is given credit for the first description of clubbing of the fingers, an important diagnostic sign in chronic suppurative lung disease, lung cancer and cyanotic heart disease. For this reason, clubbed fingers are sometimes referred to as "Hippocratic fingers". Hippocrates was also the first physician to describe Hippocratic face in Prognosis. Shakespeare famously alludes to this description when writing of Falstaff's death in Act II, Scene iii. of Henry V.

Hippocrates began to categorize illnesses as acute, chronic, endemic and epidemic, and use terms such as, "exacerbation, relapse, resolution, crisis, paroxysm, peak, and convalescence." Another of Hippocrates' major contributions may be found in his descriptions of the symptomatology, physical findings, surgical treatment and prognosis of thoracic empyema, i.e. suppuration of the lining of the chest cavity. His teachings remain relevant to present day students of pulmonary medicine and surgery. Hippocrates was the first documented chest surgeon and his findings are still valid.

The Hippocratic school of medicine described well the ailments of the human rectum and the treatment thereof, despite the school's poor theory of medicine. Hemorrhoids, for instance, though believed to be caused by an excess of bile and phlegm, were treated by Hippocratic physicians in relatively advanced ways. Cautery and excision are described in the Hippocratic Corpus, in addition to the preferred methods: ligating the hemorrhoids and drying them with a hot iron. Other treatments such as applying various salves are suggested as well. Today, "treatment [for hemorrhoids] still includes burning, strangling, and excising." Also, some of the fundamental concepts of proctoscopy outlined in the Corpus are still in use. For example, the uses of the rectal speculum, a common medical device, are discussed in the Hippocratic Corpus. This constitutes the earliest recorded reference to endoscopy.

The Hippocratic Corpus (Latin: Corpus Hippocraticum) is a collection of around seventy early medical works from ancient Greece, written in Ionic Greek. The question of whether Hippocrates himself was the author of the corpus has not been conclusively answered, but the volumes were probably produced by his students and followers. Because of the variety of subjects, writing styles and apparent date of construction, scholars believe Hippocratic Corpus could not have been written by one person (Ermerins numbers the authors at nineteen). The corpus was attributed to Hippocrates in antiquity, and its teaching generally followed his principles; thus it came to be known by his name. It might be the remains of a library of Kos, or a collection compiled in the 3rd century BC in Alexandria.

The Hippocratic Corpus contains textbooks, lectures, research, notes and philosophical essays on various subjects in medicine, in no particular order. These works were written for different audiences, both specialists and laymen, and were sometimes written from opposing view points; significant contradictions can be found between works in the Corpus. Notable among the treatises of the Corpus are The Hippocratic Oath; The Book of Prognostics; On Regimen in Acute Diseases; Aphorisms; On Airs, Waters and Places; Instruments of Reduction; On The Sacred Disease; etc.

The Hippocratic Oath, a seminal document on the ethics of medical practice, was attributed to Hippocrates in antiquity although new information shows it may have been written after his death. This is probably the most famous document of the Hippocratic Corpus. Recently the authenticity of the document's author has come under scrutiny. While the Oath is rarely used in its original form today, it serves as a foundation for other, similar oaths and laws that define good medical practice and morals. Such derivatives are regularly taken today by medical graduates about to enter medical practice.

Hippocrates is widely considered to be the "Father of Medicine". His contributions revolutionized the practice of medicine; but after his death the advancement stalled. So revered was Hippocrates that his teachings were largely taken as too great to be improved upon and no significant advancements of his methods were made for a long time. The centuries after Hippocrates' death were marked as much by retrograde movement as by further advancement. For instance, "after the Hippocratic period, the practice of taking clinical case histories died out," according to Fielding Garrison.

After Hippocrates, the next significant physician was Galen, a Greek who lived from AD. 129 to AD. 200. Galen perpetuated Hippocratic medicine, moving both forward and backward. In the Middle Ages, Arabs adopted Hippocratic methods. After the European Renaissance, Hippocratic methods were revived in Europe and even further expanded in the 19th century. Notable among those who employed Hippocrates' rigorous clinical techniques were Sydenham, Heberden, Charcot and Osler. Henri Huchard, a French physician, said that these revivals make up "the whole history of internal medicine."

The most severe form of hair loss and baldness is called the Hippocratic form.

According to Aristotle's testimony, Hippocrates was known as "The Great Hippocrates". Concerning his disposition, Hippocrates was first portrayed as a "kind, dignified, old country doctor'" and later as "stern and forbidding". He is certainly considered wise, of very great intellect and especially as very practical. Francis Adams describes him as "strictly the physician of experience and common sense." His image as the wise, old doctor is reinforced by busts of him, which wear large beards on a wrinkled face. Many physicians of the time wore their hair in the style of Jove and Asklepius. Accordingly, the busts of Hippocrates that we have could be only altered versions of portraits of these deities. Hippocrates and the beliefs that he embodied are considered medical ideals. Fielding Garrison, an authority on medical history, stated, "He is, above all, the exemplar of that flexible, critical, well - poised attitude of mind, ever on the lookout for sources of error, which is the very essence of the scientific spirit." "His figure... stands for all time as that of the ideal physician,” according to A Short History of Medicine, inspiring the medical profession since his death.

Most stories of Hippocrates' life are inconsistent with historical evidence and similar to stories told of other figures (such as Avicenna and Socrates), suggesting a legendary origin. Even during his life, Hippocrates' renown was great, and stories of miraculous cures arose. For example, Hippocrates was supposed to have aided in the healing of Athenians during the Plague of Athens by lighting great fires as "disinfectants" and engaging in other treatments. There is a story of Hippocrates curing Perdiccas, a Macedonian king, of "love sickness". Neither of these accounts is corroborated by any historians and it seems unlikely that they ever occurred.

Another legend is that Hippocrates rejected a formal request to visit the court of Artaxerxes, the King of Persia. Though ancient sources accept this as fact, some modern scholars doubt it. Another tale states that Democritus, supposed to be mad because he laughed at everything, was sent to Hippocrates to be cured. Hippocrates diagnosed him as merely having a happy disposition. Democritus has since been called "the laughing philosopher".

Not all stories of Hippocrates portrayed him in a positive manner. In one legend, Hippocrates is said to have fled after setting fire to a healing temple in Greece. Soranus of Ephesus, the source of this story, names the temple as the one of Knidos. However, centuries later, the Byzantine Greek grammarian John Tzetzes wrote that Hippocrates burned down his own temple, the Temple of Cos, and speculated that he did it to maintain a monopoly of medical knowledge. This claim directly conflicts with the traditional account of Hippocrates' personality. Other legends tell of his resurrection of Augustus's nephew; this feat was supposedly created by the erection of a statue of Hippocrates and the establishment of a professorship in his honor in Rome.

Some clinical symptoms and signs have been named after Hippocrates as he is believed to be the first person to describe those. Hippocratic face is the change produced in the countenance by death, or long sickness, excessive evacuations, excessive hunger, and the like. Clubbing, a deformity of the fingers and fingernails, is also known as Hippocratic fingers. Hippocratic succussion is the internal splashing noise of hydropneumothorax or pyopneumothorax. Hippocratic bench (a device which uses tension to aid in setting bones) and Hippocratic cap - shaped bandage are two devices named after Hippocrates. Hippocratic Corpus and Hippocratic Oath are also his namesakes. The drink hypocras is also believed to be invented by Hippocrates. Risus sardonicus, a sustained spasming of the face muscles may also be termed the Hippocratic Smile.

In the modern age, a lunar crater has been named Hippocrates. The Hippocratic Museum, a museum on the Greek island of Kos is dedicated to him. The Hippocrates Project is a program of the New York University Medical Center to enhance education through use of technology. Project Hippocrates (an acronym of "HIgh PerfOrmance Computing for Robot-AssisTEd Surgery") is an effort of the Carnegie Mellon School of Computer Science and Shadyside Medical Center, "to develop advanced planning, simulation, and execution technologies for the next generation of computer assisted surgical robots." Both the Canadian Hippocratic Registry and American Hippocratic Registry are organizations of physicians who uphold the principles of the original Hippocratic Oath as inviolable through changing social times.