Idiopathic scoliosis is a condition in which, for no known reason, there is an atypical three-dimensional curvature and rotation of the spine. Idiopathic scoliosis is the most common type of scoliosis. For the large majority of people with this condition, no specific intervention is needed. For others, treatment such as bracing or surgery is needed to effectively manage the condition. While diagnosis and treatment can be challenging, individuals with idiopathic scoliosis can expect to lead typical lives. This practical guide explains idiopathic scoliosis and the evidence-based, best-practice treatments. It also includes the lived experience of families.