Jun 04, · What is adult scoliosis? Scolioisis most frequently occurs in children and teenagers. However, adults may also be diagnosed with scoliosis, either when a curve that existed in their youth progresses, or as a de novo (newly diagnosed condition) that can result from degenerative changes in the spine or osteoporosis. The cause of adult scoliosis varies depending on the type of scoliosis. The most common form of adult scoliosis is degenerative (spine curves as you age). Adult scoliosis may be a case of pediatric scoliosis that was undiscovered until adulthood. In some cases, adolescent scoliosis may develop symptoms with aging and require treatment.