Jwara is a Sanskrit word for fever and according to Ayurveda it is considered the "king of all illnesses". This is because Jwara affects not just the body but also the mind and senses. Ayurveda understands jwara as not only an increase in body temperature but is also a feeling of malaise, unease, and discomfort, and involves the deha (body), indriya (senses), and mana (mind).
Inflammatory joint disorder most often is caused by a chronic autoimmune condition. Usually it will affect more than just the joints as it also effects the soft tissues of the body. The immune system mistakes its own tissues as an invader.