The MdDS Balance Disorder Foundation is a 501(c)(3) nonprofit foundation primarily operated by volunteers who have the disorder. Its purpose is to support the efforts to promote international awareness of Mal de Debarquement Syndrome (MdDS). We seek research toward treatments and a cure for people suffering from this disorder. MdDS is typically diagnosed when a person reports a persistent rocking feeling (though they are not necessarily rocking). This usually follows a cruise or other motion experience. Your doctor(s) may throw up their hands because your vestibular tests all prove negative.