Chronic Fatigue & Immune Dysfunction Syndrome (CFIDS) is a syndrome, hence its name.  

Acquired Immune Deficiency Syndrome (AIDS) is also a syndrome.

CFIDS & AIDS are not diseases.  -->

A syndrome is a syndrome.

Allied government mindfully left the "ID" out of CF(ID)S to create the silly, belittling Orwellian name, "CFS."

Myalgic Encephalomyelitis (ME) is a disease, just like malaria or MS ~ with specific hallmark diagnostic biomarkers.

CFIDS is AIDS-like (syndromes)
ME is MS-like (diseases)

"CFS/ME" is not interchangeable, or accurate.  

ME patients do not have CFIDS. While many do, not all CFS patients qualify for a ME diagnosis (by International Consensus Criteria (ICC)).

Just like a CFSer cannot just wake-up and decide "hey, I have malaria."  A CFSer cannot just wake-up and arbitrarily decide that they have ME.  Until the day comes when a doctor diagnoses you with ME, then you have CFS --> a syndrome.

A CFSer stating that they have ME is the equivalent of an AIDS patient stating that they have MS --->  it is wrong

Syndrome or disease, patients suffer and die of both.

E.g., AIDS (syndrome) patients die all the time.

People ignorantly talk about AIDS like its one thing, but by present-day definition, there are 29 separate and distinct DISEASES under the AIDS SYNDROME umbrella (everything from TB, malaria to lung and cervical cancers); Only every 29th AIDS patient is alike.

There have to be 29 types of CFS.  {1 type being ME}
There is only one type of ME.

CF(ID)S & ME will never be the same, because diseases and syndromes are two different things.