Diagnosis (also known as Diagnoses, Diagnose): The determination of the nature of a disease or condition, or the distinguishing of one disease or condition from another. Assessment may be made through physical examination, laboratory tests, or the likes. Computerized programs may be used to enhance the decision-making

NIH MeSH · D003933Analytical, Diagnostic and Therapeutic Techniques and Equipment

Diagnosis

Also known asDiagnoses · Diagnose · Diagnoses and Examinations · Diagnoses and Examination · Examination and Diagnoses · Examinations and Diagnoses · Antemortem Diagnosis · Antemortem Diagnoses · Diagnoses, Antemortem · Diagnosis, Antemortem · Postmortem Diagnosis · Diagnoses, Postmortem

Definition

The determination of the nature of a disease or condition, or the distinguishing of one disease or condition from another. Assessment may be made through physical examination, laboratory tests, or the likes. Computerized programs may be used to enhance the decision-making process.

MeSH classification

  • E01

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Common questions about Diagnosis

What does Diagnosis mean in medicine?
The determination of the nature of a disease or condition, or the distinguishing of one disease or condition from another. Assessment may be made through physical examination, laboratory tests, or the likes. Computerized programs may be used to enhance the decision-making process. This definition is taken from the National Library of Medicine's MeSH (Medical Subject Headings) 2026 release, which is the standard vocabulary used to index PubMed and most medical literature.
Is Diagnosis known by any other names?
Yes. Diagnosis is also referred to as Diagnoses, Diagnose, Diagnoses and Examinations, Diagnoses and Examination in different clinical, research and patient-facing contexts. The MeSH descriptor groups all of these synonyms under a single canonical concept so research and records stay consistent.
Where does Diagnosis sit in the medical classification?
Diagnosis falls under the broader medical category "Analytical, Diagnostic and Therapeutic Techniques and Equipment" in the MeSH hierarchy (tree numbers: E01). Browsing the related concepts on this page takes you to neighbouring topics in the same branch of medicine.
Where can I get a plain-language explanation of Diagnosis?
For a plain-language explanation of Diagnosis - including symptoms, treatments and what it means for an Indian patient - ask GoDavaii's Health AI. It works in 22+ Indian languages, is free and needs no signup. Tap "Ask GoDavaii AI about Diagnosis" above.

Source: NIH MeSH 2026 (D003933) — National Library of Medicine, public domain. View official MeSH record ↗