Whether viral meningitis is serious or not needs to be discussed in different situations. Generally speaking, it is not serious, and the condition will be more serious if there is hematogenous dissemination or complication. 1. Not serious: viral meningitis is a self-limiting disease, usually with mild symptoms, treatment mainly consists of bed rest, lowering body temperature, nutritional support, etc. Most patients start to recover a few days after the disease, and the disease is cured within 2 weeks. In a few patients, the discomfort can last for several weeks. 2. Serious: If severe confusion or seizure occurs due to systemic viral infection through bloodstream dissemination and finally to the central nervous system, it means that the brain parenchyma is infringed upon, causing meningoencephalitis, which is serious; if comorbidities occur, such as antidiuretic hormone malsecreting syndrome, which manifests itself as water retention, hyponatremia, etc., it is also serious. When viral meningitis is diagnosed, it is recommended to seek prompt medical attention and active treatment under the supervision of a doctor.