<s>[INST] What Is Arthritis? [/INST] Arthritis is anything affecting the joints that's causing pain and inflammation. The two broad categories of arthritis would be degenerative and inflammatory.  Source: Illinois Bone & Joint Institute. Link: https://www.ibji.com/blog/rheumatology-autoimmune-care/common-questions-about-arthritis/. Field: Rheumatology. Disease: Arthritis </s>