Syncope is a condition of temporary loss of consciousness that is usually associated with a lack of blood flow to the brain. In other words, syncope is a medical term for fainting. Syncope is a common condition, but can also be a sign of certain diseases. Syncope most often occurs when blood pressure is too low (hypotension) and the heart does not pump oxygen supply to the brain normally. Common Causes of Syncope You Need to Know There are various causes of syncope, ranging from certain medical conditions to environmental factors. Syncope can also arise due to emotional reactions to very difficult situations. In addition, syncope can also be caused by severe pain, low blood sugar levels, decreased blood pressure, decreased heart rate, or changes in blood counts. Common causes of syncope include: Low blood pressure or dilated blood vessels. Irregular heartbeat. The accumulation of blood in the legs due to sudden changes in position, for example standing with movement too fast....