Gideon,

Why do you need to know so you can focus on recovery? I would think you would want to focus on recovery, no matter what.

Yes, a nausea headache is not uncommon. I had headaches on and off for 8 months from a very mild concussion about 8 years ago.

If you look for symptoms, you will find they appear to be more intense. If you focus on recovery and ignore your symptoms and try to move forward with your life, those symptoms will become less. Take a headache med, aspirin, acetaminophen, ibuprofen, or such to reduce the intensity and move on.

Headaches are often the last symptom to resolve. As I said, for me they can take many months. The nausea would be part of a migraine like headache or it can be because you focus on the headache and anxiety causes the nausea.