The Worm In Me
Symptom check

Could it be a parasite?

Six questions that compare your pattern to the far more common look-alikes — colds, stomach bugs, food poisoning — and point you toward the right next step.

Professor Worm with a magnifying glass

The short version, in 30 seconds.

Important: this tool gives general guidance only. It cannot diagnose a parasite or rule one out. For any real concern — especially in pregnancy, young children, or anyone with a weakened immune system — see a doctor or veterinarian.

Get the free field guide

Is It a Parasite? — four pages, plain English, from CDC and WHO sources. The red flags and a printable prevention checklist.