Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Mal de debarquement ?
    ### Response:
    Mal de debarquement syndrome is a balance disorder that most commonly develops following an ocean cruise or other type of water travel and less commonly following air travel, train travel, or other motion experiences. The symptoms typically reported include: persistent sensation of motion such as rocking, swaying, and/or bobbing, difficulty maintaining balance, anxiety, fatigue, unsteadiness, and difficulty concentrating.
    