Hello! I was diagnosed with sleep apnea (obstructive) last summer and use a full face mask due to mouth breathing. I have suffered from vertigo (BPPV) for years, although it seemed to have improved over the past 3-4 years. It may be coincidental, but I have had worse/more frequent bouts of vertigo since starting cpap therapy. I experience it most often upon waking. Is it possible this is related? If so, are there some adjustments I can make to my therapy settings that may reduce the incidences of vertigo?