Unified Medical Language System® (UMLS®)
MedlinePlus Source Information
MedlinePlus Health Topics are part of MedlinePlus®, a Web-based consumer health information service, which is produced by the U.S. National Library of Medicine (NLM).
MedlinePlus Health Topics provide high level subject categories for consumer health information.
MedlinePlus Health Topics contain health information on over 750 topics which includes current news and related information.
The Metathesaurus representation of MedlinePlus Health Topics includes subject categories for diseases, conditions and wellness. In addition, the Metathesaurus representation includes terminology for finding local resources for health-related issues.
MedlinePlus Health Topics are used by consumers, health professionals, and information specialists.
MedlinePlus Health Topics are updated monthly.
Metathesaurus Update Frequency
MedlinePlus Health Topics are updated annually in the Metathesaurus, as resources permit.