Spina bifida occulta (SBO) is thought to be common, with an estimated prevalence of around 12%. Given the current US population, this prevalence statistic estimates that 37.6 million Americans have spina bifida occulta. However this does not mean that every case of spina bifida occulta is the same. The size and severity of SBO can vary. While many cases of spina bifida occulta causes no symptoms, this is not always so. Urogenital problems and back problems (e.g., herniated disc and low back pain) have been experienced by people with these lesions.
Last updated: 9/27/2013
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Eubanks JD, Cheruvu VK. Prevalence of sacral spina bifida occulta and its relationship to age, sex, race, and the sacral table angle: an anatomic, osteologic study of three thousand one hundred specimens. Spine (Phila Pa 1976). 2009 Jul 1;34(15):1539-43; http://www.ncbi.nlm.nih.gov/pubmed/19564762. Accessed 9/27/2013.