The Dark Ages were a strange and earthy time for sickness. You could suffer from “dew-worm” (ringworm). Your sudden pain could be from elf-shot. Your cure could come from sheep dung or stale urine.
Should a time machine ever thrust you back, here are 10 words from Old English Leechdoms (ca 1150) that might be good to know:
tarse – penis
lant – stale urine
fast – constipated
attery – venomous
share – pubic region
clock – a stomach sound
sigalder – charm or incantation
to fnast – to pant, or breathe fire
gound – foul matter secreted by the eye
treddle – sheep poop (this word evolved toward “turdyll”).