What best describes the physical sensation of vertigo?

The physical sensation of vertigo is characterized by a false sensation of movement, which may feel like you or your surroundings are spinning or swaying. This misperception of movement often occurs even when a person is stationary and can be triggered by various factors such as inner ear disorders, neurological conditions, or changes in head position. It is important to recognize that while vertigo can accompany other symptoms, such as dizziness or balance issues, the key aspect is the incorrect perception of motion.

The other options do not accurately embody the essence of vertigo. For instance, feeling overly relaxed pertains more to a state of calmness rather than a disorienting sensation. A complete loss of coordination suggests a significant impairment in motor skills without specifically implying the sensation of movement. An intense headache, though potentially related to other conditions that may cause vertigo, is not a direct description of the sensation itself. Hence, the correct choice aligns directly with the defining characteristics of vertigo.