Human botfly larvae, for example, burrow under your skin, forming a pus-filled pimple. Meanwhile, thousands of young Loa loa worms can travel throughout your body —even across your eyeball!

It's especially common in the feet, buttocks, thighs and hands, but the worms can enter through any part of the skin. It cannot spread between humans. When the larvae moves under the skin ...

It's especially common in the feet, buttocks, thighs and hands, but the worms can enter through any part of the skin. It cannot spread between humans. When the larvae moves under the skin ...