No studies have been undertaken to examine this, but many with SCDS seem to have more issues with nausea than other people – if you are on the borderline of getting nauseated all the time, any little bit of anything else might tip you easily over the edge. Sometimes people with vestibular issues may feel symptoms, such as nausea, caused by poor balance, even though they aren’t fully conscious that there is a lack of balance. Many people who get diagnosed with SCDS have suffered from travel sickness as far back as they can remember.