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The Faces of MdDS

Diagnosed with vestibular neuritis then possible MS. Does Julie’s story sound familiar?

After a four-day kayak trip in north Vancouver Island, August 2016, which also included flights and bus, I came back home and started working. I knew something was not quite right as I developed dizziness which then turned to nausea and vomiting which required hospitalization for five days. CT and MRI read as normal. Was […]

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The Facts of MdDS

  • It is typically triggered by motion: cars, trains, airplanes, ships, boats, and even fast elevators.
  • The average person sees 20+ doctors before getting a diagnosis.
  • Many people are suffering from MdDS and don’t know that they have it. They are undiagnosed.
  • The scale of the problem is not matched by research dollars.

The MdDS phenomenon is the natural result of the human brain adapting to environmental motion and is thus the quintessential neurological disorder.

Yoon-Hee Cha, MD

The Latest from Our Blog

  • Join the team! Patient based MdDS research is recruiting.

    Send participation inquiries to or look up our current trial at recruiting. Effective research requires teamwork. Research into the biological basis of MdDS has advanced rapidly in the last 10 years through the collaborative efforts of scientists, engineers, clinicians, funding organizations, and not least of all, people affected by MdDS. It would be […]


  • Meet Board President, Marilyn Josselyn

    My husband, Roger, and I had always enjoyed traveling. Paris. Hawaii. Thailand. Another time a trip to Morocco. We owned a timeshare in Cancun, a mere 4-hr flight from home. In 1998, we decided to embark on a different adventure, a special trip, a Russian waterways cruise. Promises of beautiful scenic settings, unforgettable experiences, new […]


  • “Why do I feel like I am on a boat? Voila MdDS,” Elizabeth discovered.

    In September 2017, my husband, my two sons (ages 20 and 21) and myself went on our first cruise, two weeks before the canaries Portugal Spain. All was well on the cruise, none of us were sea sick, but we did have rough days around the bay of biscay. On return home, my two sons […]


  • LeeAnne suffers with dizziness that isn’t vertigo.

    My name is LeeAnne and I have had MdDS for 5 years. After my third cruise, an 8-day cruise with rough seas, I noticed a change in my eye sight and had trouble reading the menus. And when I debarked I never got my land legs back. I saw my family doctor and explained my […]