Types

Fainting involves a temporary reduction of blood (and therefore oxygen) supply to the brain, resulting in a blackout. Many forms of syncope are benign and easy to associate with clear precipitants that can be avoided. Such precipitants can include many common situations and recreational drugs as well as therapeutic drugs.

Clinical Symptom

If the patient states, "I felt dizzy with blurry vision, muscle weakness, during the fall I bumped my knee, hit my head and passed out"; then it is not syncope, it is termed pre-syncope.