CRP and eosinophilic granulomatosis with polyangiitis: C-reactive protein elevation and fever are not characteristic of IgG4-RD as for other autoimmune-autoinflammatory diseases, e.g., Castleman’s disease, antineutrophil cytoplasmic antibody-associated vasculitis (especially eosinophilic granulomatosis with polyangiitis EGPA)—a phenomenon which should be considered in a differential diagnosis.