There are several possible causes for the symptoms which you describe so well here.The GP has excluded low blood sugar and also has checked his blood pressure. Your son may be having episodes called vaso-vagal attacks also known as vaso-vagal syncope which is due to a temporary reduction in the flow of oxygen carrying blood to the brain and is often caused by stress.Other important causes of these symptoms are various forms of epilepsy and inflammation of the heart muscle. Your son must be seen by a paediatrician and a clear diagnosis made to explain his symptoms.
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