My daughter had pin worms and was severely constipated. Took us 3 yrs before we found the pin worms. You can see if she has those by checking her anal area during the night with a flashlight, like at midnight. They are extremely tiny and look like tiny strings. I thought they were fabric lint til I saw one move. But my daughter was a toddler at the time and she scratched at her butt alot and cried at night.