How were subsets in other diseases identified?

[Hoopoe]

There are 4 types of multiple sclerosis. How was it discovered that there were 4 types?

It's alo well known that there are two types of diabetes.

 

[Mij]

I just looked this up.

https://mssociety.ca/about-ms/types:

Four disease courses have been identified in multiple sclerosis: clinically isolated syndrome (CIS), relapsing-remitting MS (RRMS), primary progressive MS (PPMS), and secondary progressive MS (SPMS)

 

[mat]

It's alo well known that there are two types of diabetes.

There are many types of Diabetes if you include all subclassifications of Diabetes 3. You were probably referring to Diabetes 1 and 2. At least, there is an ongoing movement in the medical community to classify rare and hereditary diseases of the sugar metabolism as well as early-onset Alzheimer's as Diabetes 3.

Theoretically, CFS also involves pathology with glycolysis, would hence also meet the criteria.

 

[Mithriel]

MS and diabetes both show differences because doctors follow a lot of different patients over the years and see how the disease progresses. They can pick out groups easily.

ME patients are hidden from medicine.