Thank you for posting your query.
It is good to note that your son is recovering well from the traumatic brain injury
. Also, he has withstood five surgeries!
Regarding the flickering of lips and tongue, they could be due to partial (or focal) seizures. This is often due to scar in the brain caused either by the trauma or the effect of surgery.
Treatment would be with anti epileptic medications.
Please discuss these issues with his doctor.
Dr Sudhir Kumar MD DM (Neurology)
Senior Consultant Neurologist