Causes of Dizziness
The reasons of a dizzy spell can usually be identified on the basis of the sensation experienced by the individual. So, the cause will depend on whether you are feeling faint, experiencing vertigo, or feeling a loss of balance. Let's have a look at the possible causes of these three different sensations in detail.
When an individual feels faint or lightheaded but does not really lose consciousness, he or she is supposed to be feeling faint. The medical term for this condition is presyncope. This feeling may also be accompanied by pale skin, nausea, and clammy hands or feet.
One of the most common causes of lightheadedness is a sudden drop in the systolic blood pressure, which is the higher number in your blood pressure reading. If you sit up or stand up too quickly, your blood pressure may drop and you may feel faint.
Another common cause of lightheadedness is when the blood flow from the heart is not sufficient. There are certain conditions of the heart that may be responsible for this. These include diseases such as cardiomyopathy, arrhythmia, or a decrease in blood volume. These conditions are usually accompanied by symptoms such as chest pain, racing heart, change in vision, and a loss of speech.
Dehydration is another possible cause of lightheadedness. This can occur due to various reasons including vomiting, diarrhea, and fever.
Conditions such as flu, hypoglycemia, common cold, and allergies are also often accompanied by a feeling of faintness.
Loss of Balance
When you experience a feeling of unsteadiness while walking, you are experiencing loss of balance or disequilibrium. This sensation of dizziness may occur due to abnormalities in the inner ear, when it often occurs in the dark.
Older adults often have poor vision and nerve damage in their legs, which could cause loss of balance.
Anyone who has muscle weakness or any condition that affects the joints may experience a loss of balance. This usually occurs when the weight-bearing joints such as the knees are affected.
There are certain neurological conditions that can also cause disequilibrium. These include Parkinson's disease (a disorder of the central nervous system), cerebellar ataxia (an ataxia that originates in the cerebellum), and spinal cord disorders.
This sensation of dizziness is also often a side-effect of anti-seizure drugs, sedatives, and tranquilizers.