Threadworm
Threadworm, which is also known as pinworm, is a fun little condition that happens when you swallow tiny threadworm eggs and the worms make their home around your bottom. If you have threadworm, you’ll often notice the little white worms, which look like thread, in your poo, and your anus or vagina will be itchy, especially at night.
Threadworm is particularly common in children, simply because kids tend to be less strict about their personal hygiene than adults, leaving them more vulnerable to picking it up and spreading it to their family.