Rabies affects the nervous system. Easily identifiable symptoms in animals include unusual behavior. Wild animals may act aggressively towards inanimate objects or lose their fear of humans and act friendly.
Foaming at the Mouth
"Foaming at the mouth" may be present during the later stages of the disease, or not at all. "Foaming at the mouth" is caused by excessive drooling, throat muscle spasms or paralysis, and involuntary jaw movements that turn excessive drool into foam.
Early symptoms in humans include:
- Abdominal pain
- Aggressive behavior
- Pain or numbness at the site of the bite
- Sore throat
Symptoms rapidly progress to include:
- Irregular heartbeat (cardiac arrhythmia)
- Throat spasms