Medical mal mots

Some medical conditions have names that are thoroughly unfair on the people who suffer from them.

I'm postponing adding "sesquipedaliophobia" until I've verified that it is an original medical word, and not one constructed for the sake of the irony.
Richard's other useful lists
One-trick Words Untruisms
Reversible names Heteronyms
Silent letter Morissettes
Pet names Quotes and Links

Wordplay compiled by Richard Stevens with Katia Houghton.