Scoliosis is a problem with the curve in your spine. Some curves in your spine are normal. But a few people have spines that make a large curve from side to side in the shape of the letter "S" or the letter "C." If this curve is severe, it can cause pain and make breathing difficult.

The good news is that most cases of scoliosis are mild. If found early, they can usually be prevented from getting worse. WebMD