|Persistent sensation of motion such as:
Symptoms less frequently reported:
Symptoms not typically associated with MdDS:
MdDS Symptoms may be associated with:
PLEASE NOTE: Many of these symptoms can be experienced by those with inner ear disorders. This is why MdDS is usually diagnosed after eliminating other disorders and by patient history that may include a recent cruise, boat, car or plane ride or other motion experience.
MdDS Symptoms are often increased:
Symptom Severity Scale*:
0 No sensation of abnormal motion.
1-2 Sensation of rocking/bobbing/swaying is almost imperceptible. Most often noticed while walking but may also be recognized while sitting, standing or lying down. Can usually perform routine daily functions without the need for rest periods.
3-4 Rocking/bobbing/swaying sensation is almost constant but can function fairly well with occasional rest periods. The sensation of rocking/bobbing/swaying may include the perception of movement along either a horizontal or vertical axis. The floor seems to move when walking (as if walking on a suspension bridge, water bed, or trampoline). Altered balance. Cannot remain standing in a fixed position with eyes closed.
5-6 Rocking/bobbing/swaying intensity is increased. Accompanied by difficulty in concentration and/or mental confusion (impaired cognitive function). Most routine tasks become difficult to accomplish. Require periods of rest. May stumble when walking.
7-8 Rocking/bobbing/swaying is more severe and noticeable while walking, standing, or sitting. Associated with considerable fatigue. Increased loss of concentration and/or mental confusion. Balance is affected (bump into objects when walking; clumsy in handling objects; may drop things).
9-10 Rocking/bobbing/swaying is extremely severe. Balance is very poor. Require support for walking and standing (have to hold onto walls). Significant mental confusion. Impaired ability to speak. Remain in bed most of the day.
Clinical studies have not been performed to validate this symptom scale. Comprehensive clinical research studies are necessary in order to characterize the important features of disease presentation/progression, to provide an unambiguous diagnosis, and to establish optimum treatments or therapies.
|MdDS Symptoms are often alleviated:
||Temporary remissions may occur as brief intervals (e.g., for hours, days, or weeks).As a given course of MdDS progresses toward sustained remission, symptoms may become less severe and temporary remissions more frequent (although, sometimes, symptoms are alleviated overnight!).||Many patients often have greater awareness and more intense symptoms in the “initial” phase of this syndrome; subsequently, there is usually a transition into symptoms of “sustained” MdDS.In addition, throughout the course of MdDS, symptom severity may vary during a given daily interval.|
|The sensation of motion is often associated with fatigue, imbalance, and impaired cognition. Symptoms can vary in intensity from day to day and even throughout the day. Many times, the reason for these changes cannot be clearly identified.In some patients, repeated bouts of MdDS occur over many years and are usually associated with another precipitating event, e.g., cruise, boat, or airplane travel.|
Most commonly, MdDS presents itself after an ocean cruise, air, or automobile travel. Symptoms usually begin shortly after the cessation of the motion stimulus and are often increased when in an enclosed space or when attempting to be motionless (sitting, lying down, or standing in a stationary position).
MdDS has also been reported to follow other types of water travel, train travel and less commonly, after sleeping on a waterbed, frequent use of high speed elevators, drug toxicity and spontaneously.
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