The feeling of vertigo involves a sense of movement either in oneself or the environment, even when there is no real motion occurring. It is characterized by a spinning sensation, particularly when the head is in motion. Dizziness, which can originate from neurological, cardiac, or vestibular/inner ear factors, is a common contributor to the experience of vertigo.

Knee pain can be caused by a variety of factors, including injuries, arthritis, and overuse. It can affect people of all ages, from athletes to seniors.