Scoliosis in teenagers is a condition where the spine develops an abnormal sideways curvature, most commonly during the rapid growth spurt just before or during puberty. What is it? Scoliosis is defined as a lateral curvature of the spine greater than 10 degrees, often with rotation of the vertebrae. It most often presents in adolescents between 10–18 years old and is called Adolescent Idiopathic Scoliosis (AIS)—“idiopathic” meaning the cause is unknown. Causes In most teenage cases (around 80–9