CRP and rheumatoid arthritis: The patient was started on filgrastim and steroids for autoimmune neutropenia thought to be from possible RA given she had complaints about joint stiffness and pain in the morning, elevated inflammatory markers (ESR/CRP), and rheumatoid factor with CCP, as well as an x-ray of the foot demonstrating degenerative changes and a retrocalcaneal spur, which is nonspecific but seen in RA (Figure 1).