While sleep apnea is much more common in men (only 5 percent of those with apnea are women) UARS affects men and women about equally. Other characteristics common to many people with UARS: having a narrow face, having a small or narrow jaw, and having a thin neck. In fact, if you had to have orthodontia as a child for overcrowded teeth, Park says it’s very likely you could develop UARS. Some people with UARS also have low blood pressure and cold hands and feet. And, says Park, if you have found over the years that you simply cannot sleep on your back (you invariably wake up) it's very likely the reason is UARS.
UARS is so new, not all doctors are familiar with it, and many sleep clinics don’t use techniques capable of identifying these subtle changes in breathing patterns. (UARS may not show up in traditional tests for disordered breathing, which measure oxygen levels.) So if you suspect you have UARS, choose a sleep study lab that's familiar with the disorder and has the equipment to test for pressure changes in your nose or alternations in breathing or pulse wave signals.