Botox Injection Overview
Dizziness is a word that is often used to
describe two different feelings. It is important to know exactly what you
mean when you say "I feel dizzy," because it can help you and your doctor
narrow down the list of possible problems.
is a feeling that you are about to faint or "pass
out." Although you may feel dizzy, you do not feel as though you or your
surroundings are moving. Lightheadedness often goes away or improves when
you lie down. If lightheadedness gets worse, it can lead to a feeling of
almost fainting or a fainting spell (syncope). You may sometimes feel
nauseated or vomit when you are lightheaded.
is a feeling that you or your surroundings are moving
when there is no actual movement. You may feel as though you are spinning,
whirling, falling, or tilting. When you have severe vertigo, you may feel
very nauseated or vomit. You may have trouble walking or standing, and you
may lose your balance and fall.
Although dizziness can occur in people of any age, it is more common among
older adults. A fear of dizziness can cause older adults to limit their
physical and social activities. Dizziness can also lead to falls and other
It is common to feel lightheaded from time to time. Lightheadedness usually
is not caused by a serious problem. It often is caused by a momentary drop
in blood pressure and blood flow to your head that occurs when you get up
too quickly from a seated or lying position (orthostatic hypotension).
Lightheadedness has many causes, including:
Illnesses such as the flu or colds. Home
treatment of your flu and cold symptoms usually will relieve
Vomiting, diarrhea, fevers, and other
illnesses that cause dehydration.
Very deep or rapid breathing
Anxiety and stress.
The use of tobacco, alcohol, or illegal
A more serious cause of lightheadedness is bleeding. Most of the time, the
location of the bleeding and the need to seek medical care are obvious. But
sometimes bleeding is not obvious (occult bleeding). You may have small
amounts of bleeding in your digestive tract camera over days or weeks
without noticing the bleeding. When this happens, lightheadedness and
fatigue may be the first noticeable symptoms that you are losing blood.
Heavy menstrual bleeding also can cause this type of
Many prescription and nonprescription medicines can cause lightheadedness or
vertigo. The degree of lightheadedness or vertigo that a medicine causes
Vertigo occurs when there is conflict between the signals sent to the brain
by various balance- and position-sensing systems of the body. Your brain
uses input from four sensory systems to maintain your sense of balance and
orientation to your surroundings.
gives you information about your position and motion
in relationship to the rest of the world. This is an important part of the
balance mechanism and often overrides information from the other
in your joints allow your brain to keep track of the
position of your legs, arms, and torso. Your body is then automatically able
to make tiny changes in posture that help you maintain your balance
pressure sensation gives you information about your
body's position and motion in relationship to gravity.
portion of the
camera, called the labyrinth, which includes the
semicircular canals, contains specialized cells that detect motion and
changes in position. Injury to or diseases of the inner ear can send false
signals to the brain indicating that the balance mechanism of the inner ear
(labyrinth) detects motion. If these false signals conflict with signals
from the other balance and positioning centers of the body, vertigo may