Oooh, I was wrong about some of these. I thought St. Vitus’ Dance was Tourette’s Syndrome, and I thought The Clap was Chlamydia. What’s the term for Lorenzo’s disease (the one featured in Lorenzo’s Oil)?
The “old man’s friend” is pneumonia. When someone (a proverbial old man) is terminally ill, waiting in bed, possibly suffering, his “friend” (pneumonia) will carry him off to a better place.
Lorenzo’s oil (which has never been shown to be of benefit in a rigorous study) was used to treat adrenoleukodystrophy. That name is actually somewhat of a short-form. The proper term for the disease is adrenomyeloleukodystropy. Try dropping that into a conversation.
Pneumonia is correct, althought C Zeta-Jones had me ROTFLMAO, before antibiotics pneumonia killed a lot of people who were older and weaker, presumably sparing them from worse or more painful deaths.
Sir William Osler, an early microbiologist named Spretococcus Pnuemoniae “the captain of the little men of death” for it’s lethality
'course that should be streptococcus
read twice, post once
Know what dipsomania is?
And I thought St. Vitus’s dance was Huntingdon’s chorea.
Alcoholism.
Priapism, for obvious reasons. 
Har!
no so rysdad, priapism is NOT a pleasant experience