chalazion - chronic sty of eye. This word sty is not related to pig parlour.
sty(2) or stye
n.,
pl. sties 5< obs. dial. styany (taken as sty on eye) < dial. styan, rising < OE stigend, prp. of stigan
, to climb, rise: see STILE16 a small, inflamed swelling of a sebaceous gland on the rim of an eyelid

i rarely get styes, but every 10 or so years, i am afflicted. How annoying it was to find out the OTC mercuric oxide cream that i had used for since childhood to treat styes is now no longer available, -- having been deemed "unsafe' because of its mercury content!
the small tubes has a use date that used to be good for 3 to 5 years, but were always expired by the time i got my next sty. each tube contained less than an ounce of cream, and less then 10% of a tube was more than enough to treat a sty.
i get more mercury from my infrequent intake of tuna!

Dear of troy: I share your annoyance that perfectly good medications get removed from
the drug stores for quite insufficient reasons, often without a satisfactory replacement.