Arrhythmia
An arrhythmia is a problem with the rate or rhythm of the heartbeat. It can beat either too quickly or too slowly as well as in an irregular pattern. In any of those scenarios, you may feel dizzy or lightheaded because your heart cannot pump blood to your brain effectively during excessively fast or slow heart rates.
Migraine
Dehydration
Vertigo
Vertigo is the false sense that your surroundings are spinning or moving. This can be caused by a problem with balance in the inner ear, problems in certain parts of the brain, or migraines. Along with vertigo you may also experience feeling or being sick and a loss of balance in addition to the feeling of dizziness.
Motion Sickness
Pregnancy
Certain Medications
There are many different prescription medications whose chief side effect is dizziness. In addition, prescriptions that lower blood pressure, cause dehydration, or lower blood sugar can also cause dizziness. This effect can also be caused and/or amplified by drinking alcohol while taking prescription medication.
Anemia
There are many different forms of anemia, each with its own cause but the general definition is that it is a condition in which your body lacks enough healthy red blood cells to carry adequate oxygen to your body’s tissue. When your brain doesn’t receive enough oxygen, it causes you to become dizzy.
Hypotension
Hypoglycemia
Hypoglycemia is the official name for abnormally low blood sugar levels that can develop in diabetics who have a decrease in food intake or from taking too much insulin. The dizziness comes into play blood sugar levels become so low that not enough glucose reaches the brain for it to function properly.