Pathognomonic

Pathognomonic: Understanding a Key Term in Medicine

Medical diagnosis is the process of determining a disease by analyzing clinical symptoms, laboratory results, and other medical data. However, not all symptoms are equally informative. Some symptoms may indicate several different diseases, while others may be pathognomonic, that is, characteristic only of one specific disease.

The term "pathognomonic" comes from the Greek "pathos" (suffering) and "gnomon" (indicator). It is used to describe a symptom or sign that is specific to one specific disease and allows for an accurate diagnosis of it.

Pathognomonic symptoms can be very useful for doctors, as they help narrow down the list of possible diagnoses and speed up the treatment process. However, such symptoms are quite rare and often require additional research to confirm the diagnosis.

There are many examples of pathognomonic symptoms in medicine. For example, a person suffering from Huntington's disease exhibits characteristic movements, so-called "chorea", that cannot be found in people who do not suffer from this disease. Patients with acute myelitis often experience a characteristic symptom - pain in the bone marrow.

However, not all symptoms can be considered pathognomonic. For example, a headache can be a symptom of many different diseases, and cannot be used for an accurate diagnosis.

In conclusion, pathognomonic symptoms play an important role in medical diagnosis, but their occurrence does not always guarantee an accurate diagnosis. Doctors must take into account all available data and conduct additional research to establish the correct diagnosis and prescribe appropriate treatment.



Pathognomonic symptoms and signs are clinical manifestations of a disease that do not occur in other diseases or conditions. They are key to diagnosis and allow the doctor to accurately determine the diagnosis and prescribe appropriate treatment.

The term “pathognomonic” comes from the Greek words “pathos” (disease) and “gnomonikos” (indicating disease), meaning “characteristic of disease.” Pathognomonic signs and symptoms are an important tool in the diagnosis of diseases and help the doctor determine the diagnosis with high accuracy.

A pathognomonic sign or symptom may be associated with a specific disease, but may also be characteristic of several diseases. For example, chest pain may be associated with a myocardial infarction, but it can also be caused by other diseases such as pleurisy or pneumonia.

However, not all pathognomonic signs and symptoms have high specificity and sensitivity. Some of them may be associated with other diseases or conditions, making them difficult to use as the sole criterion for diagnosis.

In general, pathognomonic signs and symptoms play an important role in the diagnosis of diseases, allowing the doctor to quickly and accurately determine the cause of symptoms and prescribe appropriate treatment. However, for a more accurate diagnosis of diseases, it is necessary to use a complex of diagnostic methods, including laboratory tests and instrumental diagnostic methods.



A pathognomonic symptom is one that is characteristic only of a specific disease and is not found anywhere else.

For example: a typical sign of an oncological process is tissue necrosis. Those. where there should be epithelial tissue, a necrotic ulcer forms. This phenomenon does not occur in healthy people; it is only possible in cases of cancer. In addition, the disease is also associated with changes in the structure of the endometrium. For example, with cancer, the wall of the uterus becomes thinner. Although this occurs in isolated cases, pathology can be suspected based on this sign. Also, pategognominic signs exist in gastroenterology, endocrinology and other areas of medicine. A pathognomonic sign of cancer can be one symptom or a whole complex, for example, cachexia and purpura in malignant liver disease. When a doctor sees “Ortner’s sign”—a raising of the lower edge of the right scapula when pressing on its angle and pain on the right—he may immediately suspect osteomyelitis, since this is a reliable symptom of this lesion.