Adolescent idiopathic scoliosis
Adolescent idiopathic scoliosis is a rather common disorder in which the spine starts abnormally curving (scoliosis) at the age of 10–18 years old. This disorder generally occurs during the growth spurt that occurs right before and during adolescence. In some teens, the curvature is progressive, meaning that it generally gets worse over time, however this is rare, since it is more common for this variant of scoliosis to show itself as a mild curvature.

Causes
The cause of this disorder in most teens is generally unknown. Although it is thought to be caused by both genetic and environmental factors.For example, 30% (3 in 10) of teens with the disorder have a family history of AIS, but even then, a common genetic cause for this condition has not been found.

Epidemiology
This condition affects between 1-4% of teens (1 in 100–1 in 25). But only 0.25% (1 in 400) of them need treatment for it. And an even smaller portion of them die prematurely due to a severe curvature. and the symptoms it causes.Although mild curvatures affect females and males equally (incidence-wise), severe curvatures tend to affect female teens more than male teens (also incidence-wise).


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