Vertigo is a feeling that you or your surroundings are moving when you are not actually moving. The "moving" is often described as a feeling of spinning or whirling. The "moving" feeling can also include sensations of falling or tilting. If you have vertigo, you may have difficulty walking or standing. If you stand, you may also lose your balance and fall.

Dizziness is a word that is often used to describe two different sensations. It is important to know exactly what you mean when you say, "I feel dizzy,". It is important to know exactly what you mean because it can help you and your doctor narrow down the list of possible problems.

Lightheadedness is a feeling that you are about to pass out. When you feel lightheaded, you may feel dizzy but there is no sensation of movement. Lightheadedness usually goes away or improves when you lie down. If lightheadedness does not go away and gets worse, it can lead to a feeling of almost fainting or fainting. Sometimes, nausea or vomiting symptoms accompany lightheadedness.