Thank you for posting your query.
It is possible that the head injury
may not be serious and his symptoms may be because of concussion
However, since about a week has passed after the injury, and his symptoms are still persisting, he should consult a doctor.
As of now, he can take symptomatic treatment, such as ibuprofen tablets for headache and betahistine
Dr Sudhir Kumar MD DM (Neurology)
Senior Consultant Neurologist