Hey

What is the Treatment of Headache ? 
Do clinical assessment in the nearest medical center to exclude any serious infections or conditions . If the lab tests were normal you should have balanced healthy diet contain all essential nutrients to body and to drink water as much as you can and to Sleep well and regularly . You should Avoid anxiety and stress and to eat Vitamin supplements such as Vitamax caps : One capsule daily  with analgesic as required such as Paracetamol .
What are the investigation required ?
Physical examination for any abnormal signs with Complete blood count for anemia and Blood glucose level for High or low blood glucose level . Sometimes Ct Brain for brain diseases .
What are the causes of headache ? 

• Mal-nutrition
• Anxiety and Stress
• Unhealthy diet
• Anemia
• Lack of sleep
• Vitamin deficiency
• Hypothyroidism
• Dehydration
• Migraine

What are the symptoms that require medical attention ?

• High fever
• Repeated vomiting
• Drowsiness
• Dizziness
• Blurred vision
• Pallor
• Unable to perform usual daily activity