Short answer · Medically reviewed summary · Last updated: 2026-05-08
Scoliosis is a medical condition characterized by an abnormal, sideways curvature of the spine that typically occurs in a "C" or "S" shape. While often identified during adolescence, scoliosis can affect individuals of all ages and, in severe cases, may impact lung and heart function due to pressure within the chest cavity. What are the primary types of scoliosis? Clinicians classify scoliosis based on its underlying cause and the age of onset.
Scoliosis is a medical condition characterized by an abnormal, sideways curvature of the spine that typically occurs in a "C" or "S" shape. While often identified during adolescence, scoliosis can affect individuals of all ages and, in severe cases, may impact lung and heart function due to pressure within the chest cavity.
Clinicians classify scoliosis based on its underlying cause and the age of onset. The most common form is Adolescent Idiopathic Scoliosis (AIS), which accounts for approximately 80% of cases where no specific cause is identified. Other classifications include:
Scoliosis is relatively common, affecting an estimated 2% to 3% of the population. While both boys and girls develop the condition at similar rates in mild forms, girls are significantly more likely to develop moderate to severe curves that require medical intervention. At DiseaseMaps.org, 127 people with scoliosis have already joined our community to share their experiences and support one another.
In idiopathic scoliosis, the exact mechanism remains a subject of ongoing research, though it is believed to involve a complex interplay of genetic factors, hormonal imbalances, and connective tissue abnormalities. Unlike postural imbalances caused by poor habits, true scoliosis involves a structural rotation of the vertebrae, which distinguishes it from simple spinal misalignment.
Medical disclaimer: This content is for informational purposes only and does not constitute professional medical advice, diagnosis, or treatment.