Or a feeling of vertigo, disequilibrium, imbalance or even 'brain fog'? Well the medical term for the cruise ship vertigo is Mal de Debarquement Syndrome (MDDS). This “sickness of disembarkment” is a prolonged sensation of movement following exposure, such as a long sea voyage.
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While the effects typically clear up in a few hours after returning to land, they can last for as long as two days. Symptoms can also return, or increase in intensity, if the condition is triggered.
Aural vertigo, which may occur when a person enters the cold water at the beach or swimming pool, is usually the result of the cold water entering the ears, and under certain conditions causing reflex activity in the semicircular canals of the internal ear, or labyrinth.
The disorder is called mal de debarquement syndrome. “It is a phenomenon that isn't fully understood,” says audiologist Julie Honaker, PhD CCC-A, Director of Cleveland Clinic's Vestibular and Balance Disorders Laboratories. “We think it may have to do with the brain rather than the inner ears.”
When you get back on shore, you need time to get your land legs back. That usually happens within a few minutes or hours, but it can take up to 2 days. With mal de debarquement syndrome, though, you can't shake the feeling that you're still on the boat.
With mal de debarquement syndrome, though, you can't shake the feeling that you're still on the boat. That's French for “sickness of disembarkment.” You feel like you're rocking or swaying even though you're not. It can happen to anyone, but it's much more common in women ages 30 to 60.