Shortness of breath. Abdominal discomfort or chest pain. Sudden dizziness. Confusion.

Can the flu cause mental confusion?

Also, you can get central nervous system complications from the influenza virus, or brain flu. Some of the central nervous complications include Encephalopathy when you get an altered mental status or confusion, or encephalitis, where there's actually an infection or an inflammation of the brain.

Is brain fog a symptom of the flu?

Find What's Triggering Your Brain Fog

Again, it's one of those symptoms that can be attributed to multiple causes, but when we see it pop up alongside flu-like symptoms, fever, and fatigue, the alarm bells start ringing. Brain fog is a term that describes a general feeling that your brain isn't firing as it should.