Juvenile Idiopathic Arthritis (JIA) is the most common chronic autoimmune disease in childhood, affecting 1 to 2 children in every 1,000 up to the age of 16. This e-book covers JIA, from its discovery to treatment and follow-up, promoting empathy and engagement. Understanding AIJ is critical for parents, caregivers, educators, and health professionals. This complex condition can manifest itself in a variety of ways, impacting the quality of life of children and their families in unique ways. Our goal with this e-book is to demystify JIA by providing clear and comprehensive information about its symptoms, diagnosis, treatment options, and the importance of multidisciplinary follow-up. In addition to technical knowledge, we seek to foster an environment of nurturing and understanding, essential for the journey of each child with JIA.