Persistent Sore Throat What Are Possible Causes Of A Persistent Sore Throat?

What are possible causes of a persistent sore throat? - persistent sore throat

Developed me what I thought was flu symptoms is about six weeks. All the sneezing and the symptoms are gone, but I'm stuck with a persistent cough and throat pain and crushing fatigue. What could be causing this? I also have a brain injury and dysautonomia. Is this possible epidemic my dysautonomia, or perhaps I have something new? Any tips? Thank you.