What describes the pathology of Encephalitis?

The correct answer relates to the pathological characteristics of encephalitis, which is primarily marked by inflammation of the brain tissue. In the context of encephalitis, particularly viral encepahlitis, local necrotizing hemorrhage can occur due to the inflammatory response to the infection, leading to localized damage within the brain that can become widespread if the inflammatory process continues unchecked. This can result in significant neurological deficits and complications.

While the other options describe various neurological or pathological processes, they do not accurately define the specific pathology of encephalitis. For example, the accumulation of cerebrospinal fluid (CSF) in the subarachnoid space relates more closely to conditions like hydrocephalus or meningitis, while an infection of the meninges is specifically termed meningitis. Similarly, inflammation of the peripheral nerves pertains to conditions such as neuropathies and is not representative of encephalitis, which focuses on the brain's inflammatory response rather than the peripheral nervous system.