Meningitis can be caused by viral, bacterial, and _____ factors.

Meningitis can indeed have a variety of causes, including viral, bacterial, and chemical factors. Focusing on chemical factors, certain substances like drugs or toxins can lead to inflammation of the meninges, the protective membranes surrounding the brain and spinal cord. This inflammation can result in symptoms similar to those caused by viral or bacterial meningitis, making it an important consideration in the overall understanding of meningitis.

Chemical meningitis might occur due to reactions to medications, as well as exposure to certain chemicals that can irritate the central nervous system. It's critical to recognize these potential triggers to ensure accurate diagnosis and management, as they can differ significantly from infectious causes of meningitis.

In contrast, genetic, environmental, and physical factors aren't directly classified as causes of meningitis in the same way. While genetics can predispose individuals to certain infections or conditions, they do not directly cause meningitis. Environmental factors can play a role in exposure to pathogens but are not considered a distinct category. Physical factors, similar to environmental factors, do not directly contribute to the onset of meningitis. Understanding these distinctions helps clarify the different etiologies of meningitis.