Scoliosis is where the spine twists and curves to the side.
It can affect people of any age, from babies to adults, but most often starts in children aged 10 to 15. Scoliosis can improve with treatment, but it is not usually a sign of anything serious and treatment is not always needed if it's mild.
Very large curves can damage the joints and cause arthritis of the spine. Large curves can make the ribs rub against the pelvis, causing pain. If the spine curves a lot, people might get lung problems. Kids of any age — even infants — can have scoliosis.