- Joints: Over time, the spine’s joints and bones may fuse together, making it stiff and hard to move. This usually starts at the base of the spine.
- Eyes: It can cause eye inflammation, leading to redness, pain, and sensitivity to light.
- Digestive Tract: Some people might experience abdominal pain and diarrhea.
- Heart and Lungs: Rarely, it can affect the heart and lungs, causing inflammation and increased risk for heart issues.