Sudden sezuries. Provide your feedback.

History: My mother met with a road accident in the year 2007 and her head was hitted to road blood clotted in brain  and under went neuro surgery from CMC hospital vellore. She was in coma for 3days, after coming out from coma she haven't remembered anything she used to talk something it continued for few days. After 10days started to  recall one by one slowly after 25 days she was discharged, my mother was a teacher and doctors suggested to attend her regular works after 3months she started her regular works from then on. Present Problem: Sudden sezuries, frequency - 0-3times in a month some times nothing. It lasts for 15-20mins. Observations: Starts slowly with headache, next feels like someone hitting with hevy weight on head, middle unable to breathe properly and words not come from mouth,fear. When it completes there will be no pain or any symptoms every thing will be normal. My mother was so sensitive and high on tension in nature. Please provide your feedback.