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''Mal de debarquement'' (or ''Mal de débarquement'') syndrome (MdDS, or common name disembarkment syndrome) is a rare neurological condition usually occurring after a cruise, aircraft flight, or other sustained motion event. The phrase "mal de débarquement" is French for "Sickness from Disembarkation". MdDS is typically diagnosed by a Neurologist or an Ear Nose & Throat Specialist when a person reports a persistent rocking, swaying, or bobbing feeling (though they are not necessarily rocking). This usually follows a cruise or other motion experience. Because most vestibular testing proves to be negative, doctors may be baffled as they attempt to diagnose this rare neurological syndrome. A major diagnostic indicator is that most patients feel better while driving or riding in a car or while in passive motion. The syndrome has recently received increased attention due to the amount of people presenting with the condition and more scientific research has commenced now for a number of years to determine what triggers MdDs and how to cure it. Mal de debarquement Syndrome has been noted as far back to the times of Erasmus Darwin in 1796, and Irwin J A (1881) The pathology of seasickness. == Symptoms == Symptoms most frequently reported include a persistent sensation of motion usually described as rocking, swaying, or bobbing; difficulty maintaining balance; extreme fatigue; difficulty concentrating ("brain fog"). Other common symptoms include dizziness, visual disturbances such as seeing motion, blurred vision, inability to focus etc., headaches and/or migraine headaches, the feeling of pressure in the brain and confusion. Many patients also describe ear symptoms such as hyperacusis, tinnitus, "fullness", pain, or even decreased hearing. Cognitive impairment ("brain fog") includes an inability to recall words, short term memory loss, and an inability to multi-task, unable to use a computer for any length of time and some MdDS sufferers report they are even unable to watch television, the symptoms are very debilitating and can fluctuate on a daily basis, affecting greatly work with many MdDs sufferers having to give up work and it affects many other daily, social activities. In MdDS, the symptoms persist for more than a month, possibly for many years, all medical treatment is palliative and sufferers with "Persistent MdDS" symptoms, that last beyond 4 years are unlikely to ever remit at all. Interestingly, the condition often abates when the patient is in motion such as in a car, train, plane, or boat. Symptoms are increased by stress, lack of sleep, crowds, flickering lights, loud sounds, fast or sudden movements, enclosed areas or busy patterns. MdDS is unexplained by structural brain or inner ear pathology and is thought to be perhaps a neurological syndrome most often caused by a motion trigger, but can occur spontaneously. . This differs from the very common condition of "land sickness" that most people feel for a short time after a motion event such as a boat cruise, aircraft ride, or even a treadmill routine. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Mal de debarquement」の詳細全文を読む スポンサード リンク
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