People diagnosed with meningitis often experience a desire to vomit because of nausea and some other factors. It is hard to explain or predict nausea in this case. These signs take place as the meninges get inflamed. It is not necessarily supported by the desire to vomit. The brain sends a specific signal to the rest of the organs, which provokes vomiting and nausea. The level of these symptoms and the presence of vomiting depends on the level of complexity.