What should you know about diseases similar to polio?

Polio is a viral infection that can affect the nervous system. Other infections, inflammation around the spinal cord, nerve disorders, and conditions affecting muscles can also cause limb weakness, reduced reflexes, pain, or difficulty swallowing. The resemblance of a symptom does not establish the cause.

A clinician will ask when the weakness began, whether it is spreading, and whether there was fever, recent illness, travel, exposure, injury, or a vaccination history. Early assessment helps separate conditions that need urgent treatment from problems that require different follow-up.

Treat sudden weakness, difficulty walking, facial weakness, trouble swallowing, or breathing difficulty as urgent. Keep the person safe from falls, avoid strenuous activity, and do not give food or drink if swallowing is unsafe. Contact emergency services and describe the exact time symptoms began. For prevention, keep routine vaccines up to date through [Childhood Immunisation](/treatments/preventive-care-and-vaccination/childhood-immunisation/).

Get emergency help immediately for rapidly worsening weakness, paralysis, breathing difficulty, choking, severe drowsiness, confusion, or inability to stand. A child with new weakness or loss of movement needs urgent assessment even if they seem otherwise well.

Ask what might explain the weakness, whether infection testing or neurological assessment is needed, which symptoms affect breathing or swallowing, and whether immunisations are up to date for the household.