Fibromyalgia is a chronic pain condition which causes symptoms like joint stiffness, aching, fatigue, and disrupted sleep, among others. Most common in females, fibromyalgia is commonly diagnosed during adolescence.
Juvenile idiopathic arthritis is the most common form of arthritis. Children with this condition often complain of pain and stiffness in the morning. Subtypes include oligoarthritis, polyarthritis, systemic, enthesitis-related, juvenile psoriatic arthritis, and undifferentiated.
Lupus, a disease of the immune system, can affect all different parts of the body including the joints, skin, kidneys, and blood. Systemic lupus erythematosus is the most common form.