Why do we have a headache?

Why do we have a headache?

Most people have headaches from time to time.

If you have a headache more days than not, you might have chronic daily headaches. 

Symptoms

By definition, chronic daily headaches occur 15 days or more a month, for longer than three months.

True (primary) chronic daily headaches aren't caused by another condition.

There are short-lasting and long-lasting chronic daily headaches.

Long-lasting headaches last more than four hours. They include:

  • Chronic migraine
  • Chronic tension-type headache
  • New daily persistent headache
  • Hemicrania continua
  • Chronic migraine

Chronic migraine

This type typically occurs in people with a history of episodic migraines. Chronic migraines tend to:

  • Affect one side or both sides of your head
  • Have a pulsating, throbbing sensation
  • Cause moderate to severe pain
  • Nausea, vomiting or both
  • Sensitivity to light and sound

Chronic tension-type headache

These headaches tend to:

  • Affect both sides of your head
  • Cause mild to moderate pain
  • Cause pain that feels pressing or tightening, but not pulsating

New daily persistent headache

These headaches come on suddenly, usually in people without a headache history.

They become constant within three days of your first headache. They:

  • Often affect both sides of your head
  • Cause pain that feels like pressing or tightening, but not pulsating
  • Cause mild to moderate pain
  • Might have features of chronic migraine or chronic tension-type headache

Hemicrania continua

These headaches:

  • Affect only one side of your head
  • Are daily and continuous with no pain-free periods
  • Cause moderate pain with spikes of severe pain
  • Respond to the prescription pain reliever indomethacin (Indocin)
  • Can become severe with development of migraine-like symptoms

In addition, hemicrania continua headaches are associated with at least one of the following:

  • Tearing or redness of the eye on the affected side
  • Nasal congestion or runny nose
  • Drooping eyelid or pupil narrowing
  • Sensation of restlessness

When to see a doctor

Occasional headaches are common, and usually require no medical attention.

However, consult your doctor if:

  • You usually have two or more headaches a week
  • You take a pain reliever for your headaches most days
  • You need more than the recommended dose of over-the-counter pain remedies to relieve your headaches
  • Your headache pattern changes or your headaches worsen
  • Your headaches are disabling

Seek prompt medical care if your headache:

  • Is sudden and severe
  • Accompanies a fever, stiff neck, confusion, seizure, double vision, weakness, numbness or difficulty speaking
  • Follows a head injury
  • Gets worse despite rest and pain medication

Causes

The causes of many chronic daily headaches aren't well-understood. True (primary) chronic daily headaches don't have an identifiable underlying cause.

Conditions that might cause nonprimary chronic daily headaches include:

  • Inflammation or other problems with the blood vessels in and around the brain, including stroke
  • Infections, such as meningitis
  • Intracranial pressure that's either too high or too low
  • Brain tumor
  • Traumatic brain injury

Factors associated with developing frequent headaches include: Female sex, anxiety, depression, sleep disturbances, obesity, snoring, overuse of caffeine, overuse of headache medication, other chronic pain conditions.

 

Source:

https://www.mayoclinic.org/diseases-conditions/chronic-daily-headaches/symptoms-causes/syc-20370891