What is nosology?

Nosology is a scientific classification of diseases. Basically, it is like taxonomy for the medical world, categorizing diseases using different criteria so that it can be easier to understand. Like taxonomy, nosology is designed to clearly define a discussed topic so that people do not have to explain what they are talking about. Like biologists, they know that the sequoia sempervirens is a sequoia tree, nosologists and doctors know that "diabetes mellitus" is a specific disease that can be defined with a clear set of symptoms. One of the first attempts to classify the disease took place in the Arab world around the 10th century and Linnaeus tried his hand in classifying diseases when he was not busy developing a system of biological taxonomy used today. One of the complications for the nasology was that diseases often occur in a very different way and unstuly as something like a plant that represents all its information at once, the disease can be revealed by its nature.

There are a number of ways to classify diseases. Some nosologists focus on the etiology or cause of the disease and use it as a key characteristic in defining diseases. Others look at pathogenesis, the physical development of the disease and some focus on the symptoms of the disease. Nosology also usually includes a discussion on which organ system or systems are involved in illness, allowing people to divide things into categories such as "kidney disorders" or "mental illness".

Studies in this area include laboratory work, which is proven in the hidden nature of the disease, along with observation and interaction with patients. Many doctors practice nosology every day because they talk to patients and put their symptoms together as pieces of puzzles to determine the condition of the patient. Along the way, traces of the identity of the problem can also be the key to solving it, and therefore many diseases are classified by etiology. For example, viral infections can be summerCIT of antiviral drugs.

Some branches of medicine have published extensive bundles on the nosology. In psychiatry, for example, it contains a comprehensive list of psychiatric disorders together with symptoms and criteria for diagnosis. DSM, as is known, is constantly revised to reflect new information in the field of psychiatry.