A migraine headache could be a variety of vascular headache. migraine headache is caused by vasodilatation (enlargement of blood vessels) that causes the discharge of chemicals from nerve fibers that coil round the giant arteries of the brain. it's a draining condition characterised by moderate to severe headaches, and nausea, regarding three times a lot of common in girls than in men. the standard migraine headache is unilateral pain (affecting one half the head) and pulsating in nature, lasting from four to seventy two hours. The explanation for migraines is unknown. Triggers - A minority of migraines perhaps iatrogenic by triggers. the foremost common triggers quoted square measure stress, hunger, and fatigue; but, these equally contribute to tension headaches.
The phrase, "primary headache type" means that the headache is not caused by some other disease process. Primary headache types include:

CAUSES OF HAIR LOSS :

• Migraine Headache
• Tension Headache)
• Cluster Headache and Chronic Paroxysmal Hemicrania,
• Other Headaches not otherwise explained

Signs & Symptoms of Migraine

Symptoms include nausea, vomiting, photophobia (increased sensitivity to light), phonophobia (increased sensitivity to sound), and is aggravated by routine activity. The severity of the pain, duration of the headache, and frequency of attacks is variable. There are four possible phases to a migraine attack. They are listed below - not all the phases are necessarily experienced. Additionally, the phases experienced and the symptoms experienced during them can vary from one migraine attack to another in the same person;

• The prodrome, which occurs hours or days before the headache
• The aura, which immediately precedes the headache. Approximately one-third of people who suffer from migraine headaches perceive an aura—unusual visual, olfactory, or other sensory experiences that are a sign that the migraine will soon occur.
• The pain phase, also known as headache phase.
• The postdrome