Red Spots On Bearded Dragons I Cant Figure If My Bearded Dragon Is Sick Or Dieing On Old Age?

I cant figure if my bearded dragon is sick or dieing on old age? - red spots on bearded dragons

We took her to the vet
He was everywhere and couldnt exrax
pumped full of fluids and gave him blows

and worries tonight, he does not eat his black kept me calm and everything he does is sit there, the tank is hot
and his red beard is black, if I really want to know what is wrong or whether it is normal