Is there a disease in which a symptom is hearing the same song over and over?
How about one where some layer below your skin itches? Scratching does nothing.
And then there's the bizarre behaviors. Like how you have to do things but just don't do them? A serious avoidance must mean some kind of pathological syndrome.
And then there's this symptom: heading down Route 91 when you need Route 84. More than once you do this. Two days in a row you find yourself on the wrong highway. Two days in a row you get on the wrong highway.
Those last two? Brain cancer, I bet.