What does arthralgia refer to?

Arthralgia specifically refers to pain that occurs in one or more joints. It is a symptom commonly associated with various medical conditions, including arthritis, injuries, or infections, but the term itself is purely descriptive of the pain aspect. Understanding arthralgia is important for identifying underlying causes and determining appropriate treatments, as it may arise from inflammation, mechanical issues, or other pathological processes. The other terms mentioned—swelling, infection, and stiffness—represent different clinical signs and symptoms related to joint health but do not define arthralgia itself.