### symptom | pain | headache | migraine:

Abdominal migraine
* can cause many different symptoms
  - other symptoms along with bad pain in the abdomen
* causes severe pain in the 'abdomen,'.
* is severe abdominal pain with nausea, vomiting, or loss of appetite.
+ Abdominal migraine, Signs and symptoms
  * Abdominal migraines can cause many different symptoms. A person having an AM may have all of these symptoms, or only a few.
+ Migraine, Types, Childhood periodic syndromes

Classic migraine
* begin with warning signs such as flashing lights or colors.
* is the migraine with a visual disturbance.
* start with warning signs, called an aura.

Ocular migraine
* are visual disturbances in which visual images look gray or have a wavy appearance.
* common medical problem.
* produce stronger, longer lasting flashes of light.

Retinal migraine
* occurs more frequently than ophthalmoplegic migraine.
* spasm of the artery leading into the eye which supplies the retina.

Severe migraine
* are part of the picture, as are an elevated white cell count.
* can affect a person's ability to function or work.
* knock sufferers completely off their feet.

### symptom | pain | headache | migraine:

Vasoconstriction
* can happen for different reasons including because of a medical problem
  - result in reduction of edema following burns or crush injuries
* causes the increase in venous return to the heart.
* conserves heat.
* creates greater volume pressure in the blood stream.
* decreases the flow of oxygen and nutrients to the facial skin cells.
* helps in reducing the amount of heat radiated into the environment from the skin.
* is abolished only when the nerve supply to the arterioles is interrupted.
* is an example of sympathetic hyperactivity
  - excessive tightening of the blood vessels
  - constriction
* leads to decreased absorption, lower peak blood levels and decreased duration.
* maintains the systemic blood pressure and reduces renal blood flow.
* occurs to reduce swelling.
+ Retinal migraine: Migraine

Primary headache
* Most primary headaches occur at ages.
* are tension type headache, migraine and cluster.

Secondary headache
* are headaches that are reasonably easy to explain.
* can have a variety of causes.
* is caused by an underlying medical condition.

Sinus headache
* Some sinus headaches are migraine in disguise.
* are headaches
  - perhaps the most mis-diagnosed type of headache
  - rare
  - relatively uncommon, contrary to popular belief
  - usually around the eyes, across the cheeks, or over the forehead
* can be quite painful.

### symptom | pain | headache:

Tension headache
* Some tension headaches become so severe that they develop into a migraine.
* are different then migraine headaches in several ways
  - more common as the day progresses since tension increases with time
  - most common, as they are with adults
  - the head pain typically caused by mental stress
* are the most common form of headache
  - usually dull, steady, aching pains on both sides of the head
* can affect anyone Chronic tension headaches occur frequently
  - also develop in response to stress or anxiety
  - occur at any age, but chronic tension-type headache is rare in children
* form of muscular contraction headache.
* give a sensation of tightness that completely encircles the head.
* is caused by prolonged tightening of muscles in the head and neck
  - one of the most common forms of headache
  - triggered by psychological and physical stress
* produce steady pain, like pressure or tightening, instead of throbbing.
* result from muscle strain, or contraction
  - of contraction of the neck and scalp muscles
* severe but temporary form of muscle-contraction headache.

Vascular headache
* are a group of headaches caused by irregular blood flow.
* involve blood vessels in the brain and changes in blood flow
  - the flow of blood in the brain