::Medical diagnosis


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Radiography is an important tool in diagnosis of certain disorders.

Medical diagnosis (abbreviated DS or Dx<ref>See List of medical abbreviations: D for variants.</ref>) is the process of determining which disease or condition explains a person's symptoms and signs. It is most often referred to as diagnosis with the medical context being implicit. The information required for diagnosis is typically collected from a history and physical examination of the person seeking medical care. Often, one or more diagnostic procedures, such as diagnostic tests, are also done during the process.

Diagnosis is often challenging, because many signs and symptoms are nonspecific. For example, redness of the skin (erythema), by itself, is a sign of many disorders and thus doesn't tell the healthcare professional what is wrong. Thus differential diagnosis, in which several possible explanations are compared and contrasted, must be performed. This involves the correlation of various pieces of information followed by the recognition and differentiation of patterns. Occasionally the process is made easy by a sign or symptom (or a group of several) that is pathognomonic.

Diagnosis is a major component of the procedure of a doctor's visit. From the point of view of statistics, the diagnostic procedure involves classification tests.

Medical diagnosis sections
Intro  History and etymology  Indication for diagnostic procedure  General components  Specific methods   Diagnostic opinion and its effects   Additional types of diagnosis  Overdiagnosis  Errors  Lag time   See also   References  External links  

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