The rabies virus multiplies in the central nervous system (brain and spinal cord) and affects it's working. Rabies manifests in two forms - furious rabies wherein the patient becomes aggressive and dumb rabies where the patient exhibits signs of paralysis.

The early symptoms of rabies in people are similar to that of many other illnesses, including fever, headache and general weakness or discomfort. If the victim becomes aggressive, he is kept in isolation.

As the disease progresses, more specific symptoms appear and may include insomnia (inability to sleep), anxiety (a feeling of nervousness), confusion, slight or partial paralysis, excitation, hallucinations (an experience in which you see, hear, feel, or smell something that does not exist), hyper-salivation (increase in saliva), difficulty swallowing, photophobia (fear of light), aerophobia (fear or air) and hydrophobia (fear of water).

Ultimately, death follows as the lungs and heart cease to function.