What Are The Different Types Of Stroke?

Cryptogenic Stroke

A cryptogenic stroke is a type of stroke where some portion of their brain tissues has died from blood deprivation, but a specific cause is unable to be found. When an individual experiences a stroke, the physician will perform an evaluation to help determine what may have caused the stroke. This evaluation is done because future strokes can be prevented with certain types of treatment if the underlying cause can be identified. This evaluation typically includes the use of brain CT scans, brain MRI, transcranial doppler study, angiography, and a complete echocardiographic study of the patient's heart. Underlying causes that must be ruled out before declaring an individual has had a cryptogenic stroke include blood vessel thrombosis in the brain, embolus in the brain, brain tissue inflammation, and a brain aneurysm. Even though no cause has been identified for a cryptogenic stroke, they have a lower chance of a stroke recurrence than those who have other types of strokes. Less than one in five individuals who have had a cryptogenic stroke will have another stroke within two years.

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