What is Migraine ?
• Derived from the Greek word “ hemikranios“ = half head
• A migraine is a common type of headache that may occur with
symptoms such as nausea, vomiting, or sensitivity to light. In many
people, a throbbing pain is felt only on one side of the head.
• Migraine attacks are characterized by unilateral and pulsating
severe headache, lasting 4-72 hours.
What causes migraines?
Some people who suffer from migraines can clearly identify triggers or
factors that cause the headaches, but many cannot. Potential migraine
triggers include :
• Allergies and allergic reactions
• Bright lights, loud noises, and certain odors or perfumes
• Physical or emotional stress
• Changes in sleep patterns or irregular sleep
• Smoking or exposure to smoke
• Skipping meals or fasting
Triggers do not always cause migraines, and avoiding triggers does not always
• There is dilatation of scalp arteries and large
amplitude pulsations during attacks of migraine
• Radioactive xenon cerebral blood flow studies
show significantly reduced regional flow through
the cortex during the aura stage of migraine with