With medication and physical therapy most children can keep this under control. For more severe cases, the use of corticosteroids administered orally can greatly reduce the swelling and pain. When dealing with joint stiffness in the morning, most doctors will recommend range of motion exercises to keep the joints loose. Doing these exercises will decrease the pain and stiffness over time. Most doctors will recommend walking and other low impact exercise to keep the child in shape physically and to keep the joints moving.
Pain management is what most doctor's work on most with their patients.
There are ways to manage pain with use of medication and non-medication. Some use relaxation techniques to help reduce the pain while others use a topical pain reliever. Use of whirlpool baths can greatly reduce the stiffness and pain. Sometimes cold works better. It's all trial and error when it comes to seeing what works for pain.