What symptom is unique to Meningitis compared to Chicken Pox?

In the context of distinguishing between meningitis and chickenpox, an altered level of consciousness is a symptom that is particularly relevant to meningitis. Meningitis, which involves inflammation of the protective membranes covering the brain and spinal cord, can lead to significant neurological impairment. Symptoms like confusion, lethargy, and decreased responsiveness are common as the inflammation can affect the brain's function.

On the other hand, while fever, headache, and loss of appetite can be associated with both conditions, they do not serve as unique indicators of meningitis. Fever is a common characteristic of many infections, including chickenpox, and while both conditions can present with headaches and loss of appetite, these symptoms are not exclusive to meningitis. The altered level of consciousness serves as a critical sign that indicates more severe involvement of the central nervous system, which is less likely to occur with chickenpox.