More than 90% of polio infections are asymptomatic.
The following symptoms and complaints may indicate poliomyelitis (polio):
Leading symptoms of abortive poliomyelitis.
- Fever
- Nausea (nausea)/vomiting
- Sore throat
- Myalgia (muscle pain)
- Cephalgia (headache)
Symptoms usually improve after a few days.
Leading symptoms of non-paralytic poliomyelitis.
- Fever
- Meningismus (painful stiffness of the neck)
- Back pain
- Muscle cramps
Leading symptoms of paralytic poliomyelitis.
- Back pain
- Neck pain
- Myalgia (muscle pain)
- Paralysis – these can be divided into.
- Spinal (flaccid paralysis of the extremities).
- Bulbopontine (cranial nerve palsies with disturbance of the respiratory and circulatory centers).
- Encephalitic (signs of brain inflammation) form.
- Sensory disturbances
