The scientific name for the hunchback condition is Kyphosis
: a curving of the spine that causes a bowing of the back or slouching posture. Kyphosis can occur at any age, but is rare at birth. The adolescent onset of the disease is called Adolescent Kyphosis, or Scheuerman’s disease. It is caused by the fusing together of several vertebrae. Other causes of kyphosis include osteoporosis, spondylolisthesis, endocrine diseases, disk degeneration, tumors, polio, muscular dystrophy and spina bifida.