"So I'm pretty sure that I have a mental disorder that I just made up."
When she asked about it, rightly puzzled by the statement, I told her that I that I think I suffer from a music deficiency. Not like an aversion to, or inability for music, but that my body lacks something naturally to help it function that I get from listening to music. Kind of like how Seasonal Affect Disorder (or SAD, which is the best and most appropriate acronym ever) involves feeling off without exposure to sunlight, I feel a bit off without the presence of music. I like to call it Musical Affect Disorder (or MAD).