Is it possible for someone with vasculitis to have an increase of monocytes? If so, what types of diseases would be the cause? Symptoms: fever, fatigue, severe back neck and shoulder pain, responds to high dose prednisone, decrease appetite. Negative bone

Yes, . Yes, elevated monocytes can be elevated in some types of vasculitis. Monocytes can also be elevated in chronic infections. I am glad that you have had a negative bone marrow study. High sedimentation rate can go along with inflammatory or infectious causes. It sounds like your hematologist is performing a thorough workup.