What term describes fainting or light-headedness?

The term that accurately describes fainting or light-headedness is syncope. Syncope refers to a temporary loss of consciousness and muscle strength, often described as fainting, typically caused by a decrease in blood flow to the brain. This can occur for various reasons, including dehydration, low blood pressure, or vasovagal responses triggered by stress or pain.

Dizziness, while it may seem similar, generally refers to a feeling of unsteadiness or a sense that one might lose their balance, which is not necessarily accompanied by loss of consciousness. Vertigo specifically involves a sensation of spinning or movement, often related to inner ear problems, and does not define the overall feeling of light-headedness or fainting. Confusion refers to a disturbance in mental clarity and cognition, which is distinct from the physical sensations associated with syncope.