Hii I am having pain in my left side of neck area from last 4 days and suddenly 4 days ago I woke up with this neck pain and just after next day I had started a sharp pain in my right side of head . The head pain is not for whole day..it comes and go ,but the pain is more when I wake up in morning that time I feel more pain but it is just right side of head. Could you please tell me why this sudden one side pain is happening I never had this kind of headache in my life. Can I take paracetamol pain killer ?? Is there anything serious brain nerve problem please tell me.