Question category: Neurology
A 24 year old patient presents to her GP. She is complaining of a severe unilateral headache which has occurred at least twice monthly for the last 6 months. The headache is preceded by flashing lights in her left eye and tingling and numbness in her right hand which then spreads up to her arm and face. She is photophobic with the headache and vomits. She has tried paracetamol, naproxen and aspirin with no relief and she has had to take several days of sickness from work. What is the best management course?