Viral Syndrome More Condition_symptoms Does Anyone Have Post Viral Syndrome/m.e?

Does anyone have post viral syndrome/m.e? - viral syndrome more condition_symptoms

I've known viral syndrome for me or chronic fatigue syndrome. I wonder if someone in my age (15) and how to deal so wrong, and how is it diagnosed? I have had tests for everything and everything, which eventually led to the diagnosis, but I'm not so sure if anyone knows of other conditions that may be associated with me?
My symptoms are headaches, all day, and constant fatigue