Since I'm all excited about brain disorders in general (I think I nurse some myself), I of course find this fascinating. Reminds me of a lot of the writing of Oliver Sacks who, by the way, is an avid collector of all sorts of weird stuff himself (and not just stories!)
Anyhow, go and browse these interesting and creepy illustrations. Perhaps it will inspire you (or someone, anyone, please!) to do something about the doggerel rhyming texts.