Hello, A headache can be of many reasons. The most common being migraine. Other causes can be cluster headaches, stress headaches etcetera. If headaches are too frequent need to go to a general practitioner for history and examination to come to a diagnosis. Usually, no preliminary scans required. Graded analgesia was given for treatment and easily control. Lifestyle modification also advises like decreasing tea or coffee or alcohol and smoking whichever can be triggering factors. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Abhishek Kumar