A scoliosis is a flexible or rigid deformity of the spine in the frontal plane. There are several types of scoliosis, each with specific characteristics. The most prevalent types are idiopathic, congenital, and neuromuscular scoliosis and scoliosis in adults. The aetiology is varied and largely undetermined. Essential components of diagnostics are patient history, physical examination, and radiographs. Treatment options are a conservative approach involving observation and follow-up, a conservative approach involving non-surgical treatment, and surgical treatment. Usually, idiopathic scoliosis causes no or only few complaints at a young age. Up to 35% of patients have a certain degree of back pain. The choice of a certain treatment is determined by the likelihood of progression of the spine deformity. The objective of brace treatment is preventing progression of the deformity. Important objectives of surgical treatment are preventing progression of the deformity and correcting the deformity with correction or preservation of physical equilibrium.