Hi, Thanks for writing in. Blurring, dizziness with syncope is an emergency situation and can be due to many reasons. It might happen due to decreased blood flow from heart to brain. When it happens, the blood flowing through the vessels from heart to brain might have a reduced flow. These are by the carotid and vertebral arteries on either sides. You might require a brain scan and other investigations to study the flow of blood to the brain. There are also many other causes of dizziness within the brain like a small stroke like episode or any infection. Please get yourself consulted by a doctor to evaluate any conditions like severe flu or infections of the ear and brain that might have caused your problems. Dizziness cal also occur due to problems in the inner ear and balance mechanism of the body. The balance mechanism in humans is partly due to the functioning of small hair cells in the inner ear. An infection in ear called labrynthitis can also cause sudden symptoms.