You may or may not notice anything unusual while suffering a stroke, but others observing you might. Symptoms can be telling because deficits typically match the area of the brain affected since the brain is divided into regions that control vision, hearing, movement, cognition and speech. Although it is difficult to tell hemorrhagic and ischemic strokes apart, a loss of consciousness, severe headache, nausea and vomiting may be a clue that pressure is building from a hemorrhagic brain bleed, which tends to be more life threatening. But symptoms are likely to be clinically similar for both types of stroke.
So if the event occurs in the ophthalmic artery or region, vision will be affected. If it occurs in the region of the brain responsible for language, speech will be affected. If weakness occurs on the right side of the body, a left-brain stroke is suspected.
Strokes can also produce seizures and subtle symptoms such as changes in memory, concentration, strength, sleep and mood.
More Answers from Mehmet Oz, MD