Tunga penetrans

Well, my life would have been measurably better had I never opened that link.

the mature female remains in the host for the rest of her life.

Nope

“There are no drugs currently available with proven effectiveness. Surgical extraction still remains the treatment of choice in patients with a low parasite load, such as tourists returning from endemic areas.”

Nope.

Oh dear. I don't like that one bit. Unfortunately, it was exactly what I expected from the name.