Patients with hidradenitis suppurativa are at increased risk of developing several common inflammatory arthropathies in the years following diagnosis.

Hemoglobin is a protective factor against C-reactive protein in rheumatoid arthritis, potentially slowing disease progression. A significant correlation between hemoglobin and CRP was found ...

If you have Crohn's disease, you may also experience enteropathic arthritis. This type of arthritis is an extraintestinal symptom of Crohn's, meaning it's a symptom that occurs outside the gut.

More information: Grace A. Maldarelli et al, IgG-seq identifies immune-reactive enteric bacteria in Crohn's disease with spondyloarthritis, Gut Microbes (2025). DOI: 10.1080/19490976.2025.2464221 ...