Headache


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Definition

A headache is pain or discomfort in the head, scalp, or neck. Serious causes of headaches are very rare. Most people with headaches can feel much better by making lifestyle changes, learning ways to relax, and sometimes by taking medications.


Alternative Names

Pain - head; Rebound headaches; Medication overuse headaches


Common Causes

The most common type of headaches are likely caused by tight muscles in your shoulders, neck, scalp, and jaw. These are called tension headaches.

  • They may be related to stress, depression, anxiety, a head injury, or holding your head and neck in an abnormal position.
  • Tension headaches tend to be on both sides of your head. They often start at the back of your head and spread forward. The pain may feel dull or squeezing, like a tight band or vice. Your shoulders, neck, or jaw may feel tight or sore.

Migraine headaches are severe headaches that usually occur with other symptoms such as vision changes or nausea.

  • The pain may be throbbing, pounding, or pulsating. It tends to begin on one side of your head, although it may spread to both sides.
  • You may have an "aura" (a group of warning symptoms that start before your headache). The pain usually gets worse as you try to move around.
  • These headaches may be triggered by foods such as chocolate, certain cheeses, or MSG. Caffeine withdrawal, lack of sleep, and alcohol may also trigger them.

Rebound headaches -- headaches that keep coming back -- may occur from overuse of painkillers. These may also be called medication overuse headaches. Patients who take pain medication more than 3 days a week on a regular basis can develop this type of headache.

Other types of headaches:

  • Cluster headaches are sharp, very painful headaches that tend to occur several times a day for months and then go away for a similar period of time.
  • Sinus headaches cause pain in the front of your head and face. They are due to swelling in the sinus passages behind the cheeks, nose, and eyes. The pain tends to be worse when you bend forward and when you first wake up in the morning.
  • Headaches may occur if you have a cold, the flu, a fever, or premenstrual syndrome.
  • A swollen, inflamed artery (which supplies blood to part of the head, temple, and neck area) can occur with a disorder called temporal arteritis.

Rarely, a headache may be a sign of a more serious cause, such as:

  • Brain infection like meningitis or encephalitis, or abscess
  • Brain tumor
  • Hydrocephalus
  • Problems with the blood vessels and bleeding in the brain, such as arteriovenous malformation (AVM), brain aneurysm, or stroke
  • Pseudomotor cerebri
  • Very high blood pressure

References

Digre KB. Headaches and other head pain. In: Goldman L, Ausiello D, eds. Cecil Medicine. 24th ed. Philadelphia, Pa: Saunders Elsevier; 2011:chap 405.

Kwiatkowski T, Alagappan K. Headache. In: Marx JA, Hockberger Rs, Walls RM, et al, eds. Rosen's Emergency Medicine: Concepts and Clinical Practice. 7th ed. Philadelphia, Pa: Mosby Elsevier;2009:chap 101.


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Review Date: 12/14/2011
Reviewed By: Linda J. Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington, School of Medicine. Also reviewed by Luc Jasmin, MD, PhD, Department of Neurosurgery at Cedars-Sinai Medical Center, Los Angeles, and Department of Anatomy at UCSF, San Francisco, CA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
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