Migraine differentiation in accordance with symptoms

Migraine is a form of headache originated from functional disorder of contraction and expansion of blood vessels in the brain. Its characteristics are periodic recurring headache on one side, severe headache occasionally. Normally there are no other symptoms during subsiding period. Some visual illusions, cloudy or dark spots, one-sided blindness and emotional disturbance can be observed during migraine attack. Some symptoms before attack are nausea, vomiting, pale face and others. Many cases last for years before they are properly diagnosed, treated and cured.

Types of migraine are many. So far there is not a single standard to differentiation of migraine according to its symptoms. There are, in general, four types from differentiation in symptoms. Their characteristics of pain might be similar, but their side symptoms and pre-side symptoms (forebodings) are not. The four types are: