Together, these three are a nasty treo. All three can cause nausea. Sometimes they can cause nausea at similar times and sometimes they can cause nausea at different times. Individuals battling all three need to have a strong understanding of how the different conditions may cause similar symptoms. Both GERD and BPPV can potentially cause nausea when lying down. BPPV can cause nausea indirectly... usually followed by spinning. When an individual has Migraines, they are more prone to BPPV and are likely to be nauseated (with or without vertigo). Both Migraine and BPPV can cause individuals to vomit which can aggravate GERD.
When treating BPPV in an individual with a history of GERD, caution has to be taken not to aggravate the GERD.