core + health-lifesci (Health and Lifesciences Extension): terms relating to healthcare, medicine and the life sciences.


Defined in the extension.
Canonical URL:

Thing > MedicalEntity > MedicalIntangible > DDxElement

An alternative, closely-related condition typically considered later in the differential diagnosis process along with the signs that are used to distinguish it.

Usage: Between 10 and 100 domains
PropertyExpected TypeDescription
Properties from DDxElement
diagnosis MedicalCondition One or more alternative conditions considered in the differential diagnosis process as output of a diagnosis process.
distinguishingSign MedicalSignOrSymptom One of a set of signs and symptoms that can be used to distinguish this diagnosis from others in the differential diagnosis.
Properties from MedicalEntity
code MedicalCode A medical code for the entity, taken from a controlled vocabulary or ontology such as ICD-9, DiseasesDB, MeSH, SNOMED-CT, RxNorm, etc.
guideline MedicalGuideline A medical guideline related to this entity.
legalStatus DrugLegalStatus  or
MedicalEnumeration  or
The drug or supplement's legal status, including any controlled substance schedules that apply.
medicineSystem MedicineSystem The system of medicine that includes this MedicalEntity, for example 'evidence-based', 'homeopathic', 'chiropractic', etc.
recognizingAuthority Organization If applicable, the organization that officially recognizes this entity as part of its endorsed system of medicine.
relevantSpecialty MedicalSpecialty If applicable, a medical specialty in which this entity is relevant.
study MedicalStudy A medical study or trial related to this entity.
Properties from Thing
additionalType URL An additional type for the item, typically used for adding more specific types from external vocabularies in microdata syntax. This is a relationship between something and a class that the thing is in. In RDFa syntax, it is better to use the native RDFa syntax - the 'typeof' attribute - for multiple types. tools may have only weaker understanding of extra types, in particular those defined externally.
alternateName Text An alias for the item.
description Text A description of the item.
disambiguatingDescription Text A sub property of description. A short description of the item used to disambiguate from other, similar items. Information from other properties (in particular, name) may be necessary for the description to be useful for disambiguation.
image ImageObject  or
An image of the item. This can be a URL or a fully described ImageObject.
mainEntityOfPage CreativeWork  or
Indicates a page (or other CreativeWork) for which this thing is the main entity being described. See background notes for details.
Inverse property: mainEntity.
name Text The name of the item.
potentialAction Action Indicates a potential Action, which describes an idealized action in which this thing would play an 'object' role.
sameAs URL URL of a reference Web page that unambiguously indicates the item's identity. E.g. the URL of the item's Wikipedia page, Freebase page, or official website.
url URL URL of the item.

Instances of DDxElement may appear as values for the following properties
PropertyOn TypesDescription
differentialDiagnosis MedicalCondition One of a set of differential diagnoses for the condition. Specifically, a closely-related or competing diagnosis typically considered later in the cognitive process whereby this medical condition is distinguished from others most likely responsible for a similar collection of signs and symptoms to reach the most parsimonious diagnosis or diagnoses in a patient.

Schema Version 3.1