Breathe easy, though—in reality, Cymothoa exigua, the parasitic isopod in question, only targets fish. Commonly known as the tongue-eating louse, it measures only about 0.3-1.1 inches in length ...

Ivermectin is effective against other parasites, but in a noncontrolled study, a single standard dose eradicated head lice in only 23% of subjects. Examining efficacy and safety, Chosidow and ...