Darn, just realized it may be very true! Look at the symptoms they mention;
"Symptoms most frequently reported include a persistent sensation of motion usually described as rocking, swaying, or bobbing; difficulty maintaining balance; extreme fatigue; and difficulty concentrating ("brain fog"). [...] dizziness, visual disturbances (such as seeing motion, inability to focus etc.), headaches and/or migraine headaches, confusion, and anxiety. [...] 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. [...]
Symptoms are increased by stress, lack of sleep, crowds, flickering lights, loud sounds, fast or sudden movements, enclosed areas or busy patterns."
If this isn't WD, I don't know what is...