Swoons is a term used to describe a type of faint or fainting spell. It is also known as syncope, which is a medical term for a brief loss of consciousness due to a decrease in blood flow to the brain. Fainting is usually caused by a sudden drop in blood pressure, and can be triggered by a variety of factors such as fear, pain, or standing up too quickly. Syncope is a more serious condition that can be caused by a heart arrhythmia or other medical condition. Both swoons and syncopes can cause a person to become weak and dizzy, and can lead to a loss of consciousness.