​Consult your doctor if you experience these:

• Frequent headaches that occur once or more a week
• Taking painkillers more than once a week
• Change in the pattern of a regular headache
• Stiff neck or fever with headache
• Headaches with dizziness, unsteady gait, slurred speech, weakness or numbness
• Confusion and drowsiness
• Headache that begins and persists after head injury
• First or the worst headache in your life
• Headache that begins after the age of 50
• If you have a new headache and a history of cancer, autoimmune disease or Human Immunodeciency
  Virus (HIV)