Terminology Syndrome vs Disease

Doctor of Physical Therapy

B.S. in Kinesiology

Doctor of Physical Therapy

B.A. in Neuroscience

Syndrome v. Disease

Do you know the difference?

Conceptual Frameworks

Diseases and syndromes are concepts whose only purpose is to framework, organize, and explain the complexity of a clinical experience1

Well-Defined Language Improves treatment

Using specific and intentional language, allows a clinician to create a more accurate prognosis and more effective treatment1

Poorly defined language

If we cannot clearly define these concepts, our attempts to communicate important patient information will only add more ambiguity and uncertainty into the patient’s plan of care.

↑ Ambiguity
↑ Uncertainty
↑ Assumptions

↓ Quality of car
↓ Patient outcomes

So… What does a disease or syndrome refer to?

Is it a certain Etiology? Pathogenesis? Clinical presentation? or All of the above?

Syndrome

A state of deterioration

Syndrome: Literal meaning

Greek syn- (together) and -dromus (a course) can be taken literally as “running together” or “concurrence”

We can apply this to a medical syndrome and define it as certain signs and symptoms that run together as a clinical presentation

Definition

Syndrome: A recognizable group of signs and symptoms which indicate a specific condition for which a direct cause is not understood2

Disease

A process of deterioration3

A process by definition needs a start, middle, and end

Start Middle End
Etiology Pathogenesis Signs & Symptoms

Definition

Disease: A process of deterioration that has a specific etiology, pathogenesis, and signs & symptoms3

Syndrome Vs Disease


Etiology Pathogenesis Signs & Symptoms
Syndrome Unknown Unknown
Disease

Treatment

Since a syndrome outlines a clinical presentation without a mechanism, its treatment plan focuses on managing signs and symptoms3


A disease specifies the mechanism of disorder, the treatment can effect the underlying mechanism3

Viral Syndrome example

Doctors label “viral syndrome” when they are uncertain which specific viral agent is causing the illness2


Once the specific viral agent is identifed, it should be labeled as “_____ disease2

Example: Kawasaki Syndrome → Disease

When there was limited knowledge about Kawasaki Disease, the clinical signs and symptoms were referred to as “Kawasaki Syndrome2.


As understanding progressed and its etiology, pathogenesis, and clinical presentation were clearly defined, it was then upgraded to “Kawasaki Disease2

References




1.
Pearce JMS. Disease, diagnosis or syndrome? Practical Neurology. 2011;11(2):91-97. doi:10.1136/jnnp.2011.241802
2.
Calvo F, Karras BT, Phillips R, Kimball AM, Wolf F. Diagnoses, syndromes, and diseases: A knowledge representation problem. AMIA Annual Symposium proceedings AMIA Symposium. 2003;2003:802.
3.
Lenka A, Louis ED. Do We Belittle Essential Tremor by Calling It a Syndrome Rather Than a Disease? Yes. Frontiers in Neurology. 2020;11:522687. doi:10.3389/fneur.2020.522687