I've been treating a different woman who also has Disembarkment Syndrome (Mal de Disembarquement Syndrome - MdDS) (a specific type of vertigo). After approximately a month of treatment, her symptoms were about 50% improved. Then, as she was driving in the mountains, a deer jumped out from seemingly nowhere and it ran into the drivers' side of her car! She didn't seem to have symptoms from the car accident. But, 7 days later the symptoms of the vertigo were worse again. Sure enough, an exam revealed that her brain was injured from the whiplash in the accident. I'm optimistic that she will be well again soon.
Please know that all car accidents above 6mph cause neurological problems. Just because a person is symptom free within a couple days of an auto accident does NOT mean they were not injured.
Her young daughter was also in the car. She too, was injured. I'm happy to say that it's only been a month of treatment for her daughter and she is almost pre-accident status. I wish my mother had known to bring me to a functional neurologist when I had a devastating car accident when I was 7 years old. This is what triggered my scoliosis. Get checked!