The prognosis for someone diagnosed with Chiari malformation type 1 is often unknown. Many people with this condition do not have any symptoms, and it is not possible to predict if symptoms will develop in the future. Other affected individuals may experience dizziness, muscle weakness, numbness, vision problems, headache, or problems with balance and coordination. In these individuals, it is not always known if symptoms will get worse over time. It is important for people with Chiari malformation type 1 to receive regular medical care so they can be monitored by a physician for any new symptoms.
There are some treatments that may help reduce or eliminate the symptoms of Chiari malformation type 1. Medications may ease certain symptoms, such as pain. Surgery is another treatment option, but it is typically reserved for people with severe symptoms. Many patients who have had surgery see a reduction in their symptoms and/or prolonged periods of relative stability.