AI:What made the human being bark like dog, become wildish, and tremble epilepsy like after biting of dog. Which bacteria viral and hormones biochemical play role there.

 

You're describing a situation that sounds like rabies, a viral disease that affects the central nervous system and can cause dramatic behavioral and neurological symptoms in humans after being bitten by an infected animal, typically a dog.

Let’s break it down clearly:

Cause: Rabies Virus
Type: Virus (Not bacteria)
Family: Rhabdoviridae
Genus: Lyssavirus
Transmission: Usually through the saliva of an infected animal via bite.
Symptoms You Described: Explained
"Bark like dog" / Strange vocalizations:
Rabies affects the brainstem and limbic system, causing hallucinations, spasms, and sometimes bizarre vocal sounds — this might be interpreted as "barking" or making animal-like noises.
The patient may also be unable to swallow properly, leading to hoarse, gurgling sounds.
"Become wildish" / Aggressive behavior:
The virus affects the limbic system, the part of the brain responsible for emotions.
This can cause hyperactivity, aggression, confusion, delirium, and fear — the "furious" form of rabies.
"Tremble epilepsy like" / Seizures and spasms:
As the virus attacks the brain and spinal cord, it can cause convulsions, seizures, tremors, and muscle spasms.
Biochemical & Hormonal Mechanisms Involved
Although rabies is primarily a viral neurological disease, some neurochemicals and hormones play a role in the symptoms:

System What Happens
Nervous system Virus travels from bite site → peripheral nerves → central nervous system (CNS) → brain
Neurotransmitters Rabies alters levels of dopamine, serotonin, GABA, leading to excitability, aggression, seizures
Immune response Local immune evasion by virus; when virus reaches brain, inflammation (encephalitis) causes severe damage
Hormonal response Stress hormones like cortisol, adrenaline (epinephrine) spike due to CNS involvement and fear/aggression
Autonomic dysfunction Causes abnormal heart rate, blood pressure, and breathing due to hypothalamic involvement
Notable Effects on Brain Areas
Hippocampus: memory, behavior
Hypothalamus: hormonal control, stress
Brainstem: swallowing, vocal cords, respiration
Amygdala: fear and aggression
Conclusion
So, the dramatic changes you described — strange sounds, aggression, seizures — are due to the rabies virus attacking the central nervous system, affecting behavior, motor control, and hormone regulation. It is not caused by bacteria, and is one of the deadliest known viruses if symptoms appear (almost 100% fatal once clinical signs start).

If you'd like, I can also show a simplified diagram of how the virus travels and impacts the body.