There is no "test" for ME. And no treatment. So perhaps you are "lucky" and it is something treatable. or at least you get better treatment.

My Life with ME/CFS (and fluid art if i am able to). The daily struggle with fatigue, pain, brainfog, PEM and anxiety. I raise awareness as this is also very simular to long covid

NOTE: if i am able i will also share creation and teaching of acrylic pouring