Many people write off a stiff knee or a swollen finger as a normal part of getting older or as the price of an active weekend. Most twinges are harmless. But when the same joint complains for weeks, or several joints act up together, those signals may be pointing to something that deserves a closer look.
Why the Word “Arthritis” Covers So Much Ground
Arthritis is an umbrella term for more than 100 conditions that affect joints and the tissues around them. Because different forms can have very different causes
