[Semper Mark]

Pinworms sneak out of your anus at night Tiny pinworms lay eggs around a host's anus, leading to an itching sensation, which creates a vicious cycle if your fingers come in contact with your mouth

When you have pinworms you scratch your anus and touch your mouth.

Don't scratch your anus and touch your mouth:

[goat granny]

You get a prescription for pin worms from the doctor and everyone in the family has to take it...Happened every October until my last kid got out of elementary school...They can pick up the microscoptic eggs from toys, book etc in school....

[csmusaret]

Thats why they make Preparation H taste bad—so you won’t lick your fingers.