Feeling dizzy is uncomfortable, and the sensations can vary from person to person. Some people describe feeling light-headed or unsteady. Other people feel a sense that the room is spinning or moving, a sensation also called vertigo. Some people may lose their balance or feel nauseated. Dizziness can even make you feel weak and tired, or make it difficult to concentrate.
Dizziness can be caused by medication or by a wide variety of conditions, including inner ear problems and migraines. However, dizziness can also be a sign that the heart is not pumping enough blood because of blocked arteries, heart rhythm problems, or heart disease. If you are experiencing repeated or extended dizziness, call your doctor for evaluation.