My sister is getting headaches on a weekly basis for which she takes Saridon and it subsides. But this time her headache lasted for two days..Saridon did not work this time even though she took 2-3 (in two days). She had to take Sumo (recommended by a friend) which worked somewhat. But she's still having mild headache. Please advise: 1. Is she having migraine attacks? 2. What medicine should she use for immediate relief? 3. What kind of Doctor she should consult? Thank you for your help.