Watermelon,

There are a lot of reasons for shaking during the night. It can be due to sleep apnea, mini-seizures, etc. I've had both and with the stressful dreams. It is not uncommon to have jerking motions during the transition from almost asleep to sleep.

Have you had any medical care ? Are you taking any meds ?

When did you suffer your concussion ? PCS is not usually diagnosed until 6 weeks or so after a concussion, depending on the doctor.

What was the concussion trauma event ?

Concussion is a process, not a one moment event. Symptoms can get worse even weeks after the impact.

Have you done anything to help with healing ?

What are your daily activities like ?