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Topic 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.

  • Lightheadedness 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.
  • Vertigo is a feeling that you or your surroundings are
    moving when there is no actual movement. You may feel as though you are
    off balance, 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 injuries.

Lightheadedness

It is common to feel lightheaded from
time to time. Brief episodes of lightheadedness are not usually the result of a serious problem. Lightheadedness 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). Ongoing lightheadedness may mean you have a more serious problem that needs to be evaluated.

Lightheadedness
has many causes, including:

  • Allergies.
  • Illnesses such as the
    flu or colds. Home treatment of your flu and cold symptoms usually will relieve
    lightheadedness.
  • Vomiting, diarrhea, fevers, and other illnesses
    that cause
    dehydration.
  • Very deep or rapid breathing
    (hyperventilation).
  • Anxiety and
    stress.
  • The use of tobacco, alcohol, or
    illegal drugs.

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 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 lightheadedness.

Sometimes the cause of
lightheadedness is an abnormal heart rhythm (arrhythmia),
which can cause fainting spells (syncope). Unexplained fainting spells need to
be evaluated by a doctor. You can check your heart rate by taking your pulse.

Many prescription and nonprescription
medicines can cause lightheadedness or vertigo. The
degree of lightheadedness or vertigo that a medicine causes will vary.

Vertigo

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.

  • Vision 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 balance-sensing systems.
  • Sensory nerves 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
    (proprioception).
  • Skin pressure sensation
    gives you information about your body’s position and motion in relationship to
    gravity.
  • A portion of the
    inner ear, 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 occur.

Common causes of vertigo include:

Less common causes of vertigo include:

  • A noncancerous growth in the space behind the
    eardrum (cholesteatoma).
  • Brain tumors and cancer that has traveled
    from another part of the body (metastatic).

Immediate medical attention is needed if vertigo occurs
suddenly with
a change in speech or vision or other loss of function. Vertigo that occurs with loss of
function in one area of the body can mean a problem in the brain, such as a
stroke or
transient ischemic attack (TIA).

Alcohol and many prescription and nonprescription
medicines can cause lightheadedness or vertigo. These problems may develop
from:

  • Taking too much of a medicine (overmedicating).
  • Alcohol and medicine interactions. This is a problem, especially
    for older adults, who may take many medicines at the same
    time.
  • Misusing or abusing a medicine or alcohol.
  • Drug
    intoxication or the effects of withdrawal.

Check your symptoms to decide if and when you
should see a doctor.

Check Your Symptoms

Is dizziness your main problem?
Yes
Dizziness
No
Dizziness
How old are you?
3 years or younger
3 years or younger
4 to 11 years
4 to 11 years
12 years or older
12 years or older
Are you male or female?
Male
Male
Female
Female
Have you had a head injury?
Yes
Head injury
No
Head injury
Could you be having symptoms of a heart attack?
If you’re having a heart attack, there are several areas where you may feel pain or other symptoms.
Yes
Symptoms of heart attack
No
Symptoms of heart attack
Do you have symptoms of shock?
Yes
Symptoms of shock
No
Symptoms of shock
Did you pass out completely (lose consciousness)?
Yes
Lost consciousness
No
Lost consciousness
If you are answering for someone else: Is the person unconscious now?
(If you are answering this question for yourself, say no.)
Yes
Unconscious now
No
Unconscious now
Are you back to your normal level of alertness?
After passing out, it’s normal to feel a little confused, weak, or lightheaded when you first wake up or come to. But unless something else is wrong, these symptoms should pass pretty quickly and you should soon feel about as awake and alert as you normally do.
Yes
Has returned to normal after loss of consciousness
No
Has returned to normal after loss of consciousness
Did the loss of consciousness occur during the past 24 hours?
Yes
Loss of consciousness in past 24 hours
No
Loss of consciousness in past 24 hours
Have you had any new neurological symptoms other than dizziness?
Yes
Other neurological symptoms
No
Other neurological symptoms
Do you have these symptoms right now?
Yes
Neurological symptoms now present
No
Neurological symptoms now present
Is the dizziness severe?
Severe means that you are so dizzy that you need help to stand or walk.
Yes
Severe dizziness
No
Severe dizziness
Yes
Arrhythmia or change in heart rate
No
Arrhythmia or change in heart rate
Yes
Symptoms of serious illness
No
Symptoms of serious illness
Do you have vertigo?
Yes
Vertigo
No
Vertigo
Have you had sudden, severe hearing loss?
Yes
Sudden, severe hearing loss
No
Sudden, severe hearing loss
Is vertigo a new problem?
Yes
New vertigo
No
New vertigo
Are your symptoms getting worse?
Yes
Dizziness is getting worse
No
Dizziness is getting worse
Did the symptoms start after a recent injury?
Yes
Symptoms began after recent injury
No
Symptoms began after recent injury
Have you recently had moments when you felt like you were going to faint?
Yes
Episodes of feeling faint
No
Episodes of feeling faint
Have you felt faint or lightheaded for more than 24 hours?
Yes
Has felt faint or lightheaded for more than 24 hours
No
Has felt faint or lightheaded for more than 24 hours
Are you nauseated or vomiting?
Nauseated means you feel sick to your stomach, like you are going to vomit.
Yes
Nausea or vomiting
No
Nausea or vomiting
Are you nauseated a lot of the time or vomiting repeatedly?
Yes
Persistent nausea or vomiting
No
Persistent nausea or vomiting
Do you think that a medicine could be causing the dizziness?
Think about whether the dizziness started after you began using a new medicine or a higher dose of a medicine.
Yes
Medicine may be causing dizziness
No
Medicine may be causing dizziness
Have you been feeling dizzy for more than 5 days?
Yes
Dizziness for more than 5 days
No
Dizziness for more than 5 days
Is the problem disrupting your daily activities?
Yes
Dizziness interfering with daily activities
No
Dizziness interfering with daily activities

Many things can affect how your body responds to a symptom and what kind
of care you may need. These include:

  • Your age. Babies and older
    adults tend to get sicker quicker.
  • Your overall health. If you have a condition such as diabetes, HIV, cancer, or heart
    disease, you may need to pay closer attention to certain symptoms and seek care
    sooner.
  • Medicines you take. Certain
    medicines, herbal remedies, and supplements can cause symptoms or make them
    worse.
  • Recent health events, such as surgery
    or injury. These kinds of events can cause symptoms afterwards or make them
    more serious.
  • Your health habits and lifestyle, such as eating and exercise habits, smoking, alcohol or drug
    use, sexual history, and travel.

Try Home Treatment

You have answered all the questions. Based on your answers, you may be
able to take care of this problem at home.

  • Try home treatment to relieve the
    symptoms.
  • Call your doctor if symptoms get worse or you have any
    concerns (for example, if symptoms are not getting better as you would expect).
    You may need care sooner.

Vertigo is the feeling that you or
your surroundings are moving when there is no actual movement. It may feel like
spinning, whirling, or tilting. Vertigo may make you sick to your stomach, and
you may have trouble standing, walking, or keeping your balance.

Symptoms of a heart attack may
include:

  • Chest pain or pressure, or a strange feeling in the chest.
  • Sweating.
  • Shortness of
    breath.
  • Nausea or vomiting.
  • Pain, pressure, or a
    strange feeling in the back, neck, jaw, or upper belly, or in one or both
    shoulders or arms.
  • Lightheadedness or sudden
    weakness.
  • A fast or irregular heartbeat.

The more of these symptoms you have, the more likely it is that
you’re having a heart attack. Chest pain or pressure is the most common
symptom, but some people, especially women, may not notice it as much as other
symptoms. You may not have chest pain at all but instead have shortness of breath, nausea, or a strange feeling in your chest or other areas.

Symptoms of serious illness may
include:

  • A severe headache.
  • A stiff
    neck.
  • Mental changes, such as feeling confused or much less
    alert.
  • Extreme fatigue (to the point where it’s hard for you to
    function).
  • Shaking chills.

Heartbeat changes can include:

  • A faster or slower heartbeat than is normal for
    you. This would include a pulse rate of more than 120 beats per minute (when
    you are not exercising) or less than 50 beats per minute (unless that is normal
    for you).
  • A heart rate that does not have a steady
    pattern.
  • Skipped beats.
  • Extra beats.

Neurological symptoms—which may be
signs of a problem with the nervous system—can affect many body functions.
Symptoms may include:

  • Numbness, weakness, or lack of movement in your
    face, arm, or leg, especially on only one side of your body.
  • Trouble seeing in one or both eyes.
  • Trouble speaking.
  • Confusion or trouble understanding simple statements.
  • Problems with balance or coordination (for example, falling down
    or dropping things).
  • Seizures.

Many prescription and nonprescription medicines can make you
feel lightheaded or affect your balance. A few examples are:

  • Antibiotics.
  • Blood pressure
    medicines.
  • Medicines used to treat depression or
    anxiety.
  • Pain medicines.
  • Medicines used to treat cancer
    (chemotherapy).

Shock is a life-threatening condition that may quickly occur
after a sudden illness or injury.

Symptoms of shock (most of which will be present) include:

  • Passing out (losing consciousness).
  • Feeling very dizzy or
    lightheaded, like you may pass out.
  • Feeling very weak or having
    trouble standing.
  • Not feeling alert or able to think clearly. You
    may be confused, restless, fearful, or unable to respond to questions.

Seek Care Now

Based on your answers, you may need care right away. The problem is likely to get worse without medical care.

  • Call your doctor now to discuss the symptoms and
    arrange for care.
  • If you cannot reach your doctor or you don’t have
    one, seek care in the next hour.
  • You do not need to call an
    ambulance unless:

    • You cannot travel safely either by driving
      yourself or by having someone else drive you.
    • You are in an area
      where heavy traffic or other problems may slow you down.

Seek Care Today

Based on your answers, you may need care soon. The
problem probably will not get better without medical care.

  • Call your doctor today to discuss the symptoms
    and arrange for care.
  • If you cannot reach your doctor or you don’t
    have one, seek care today.
  • If it is evening, watch the symptoms and
    seek care in the morning.
  • If the symptoms get worse, seek care
    sooner.

Call 911 Now

Based on your answers, you need
emergency care.

Call 911 or other emergency services now.

After you call
911 , the operator may tell you to chew 1 adult-strength (325 mg) or 2
to 4 low-dose (81 mg) aspirin
. Wait for an ambulance. Do not try to drive yourself.

Make an Appointment

Based on your answers, the problem may not improve without medical
care.

  • Make an appointment to see your doctor in the
    next 1 to 2 weeks.
  • If appropriate, try home treatment while you
    are waiting for the appointment.
  • If symptoms get worse or you have
    any concerns, call your doctor. You may need care sooner.

Call 911 Now

Based on your answers, you need
emergency care.

Call 911 or other emergency services now.

Head Injury, Age 4 and Older
Head Injury, Age 3 and Younger

Home Treatment

Lightheadedness usually is not a cause for concern unless it
is severe, does not go away, or occurs with other symptoms such as an irregular
heartbeat or fainting. Lightheadedness can lead to falls and other injuries.
Protect yourself from injury if you feel lightheaded:

  • Lie down for a minute or two. This will allow
    more blood to flow to your brain. After lying down, sit up slowly and remain
    sitting for 1 to 2 minutes before slowly standing up.
  • Rest. It is
    not unusual to develop lightheadedness during some
    viral illnesses, such as a cold or the flu. Resting
    will help prevent attacks of lightheadedness.
  • Do not drive a motor
    vehicle, operate equipment, or climb on a ladder while you are
    dizzy.
  • Do not use substances that can affect your circulation,
    including caffeine, tobacco, alcohol, and illegal drugs.
  • Do not
    get
    dehydrated, which can cause or increase
    lightheadedness, when you have an illness that causes diarrhea, vomiting, or a
    fever. Drink more fluids, especially water. Other fluids are also helpful, such
    as fruit juice mixed to half-strength with water,
    rehydration drinks, weak tea with sugar, clear broth,
    and gelatin dessert. If you have another medical condition, such as kidney
    disease or heart disease, that limits the amount of fluids you are allowed to
    have, do not drink more than this amount without first talking to your
    doctor.

If you have vertigo:

  • Do not lie flat on your back. Prop yourself up
    slightly to relieve the spinning sensation.
  • Move slowly to avoid
    the risk of falling.

Symptoms to watch for during home treatment

Call your doctor if any of the following occur during home
treatment:

  • Nausea or vomiting persists or
    increases.
  • Fainting
    occurs.
  • Your symptoms become more severe or frequent.

Prevention

You may be able to prevent lightheadedness
caused by
orthostatic hypotension by taking your time.

  • Get up slowly from your bed or
    chair.
  • Sit on the edge of the bed for a few minutes before
    standing.
  • Sit up or stand up slowly to avoid sudden changes in
    blood flow to your head that can make you feel lightheaded.

When you are dizzy, your risk of falling increases. You can
make changes in your home to reduce your risk of falls.

For more information about falls, see the topic Preventing Falls.

Preparing For Your Appointment

To prepare for your appointment, see the topic Making the Most of Your Appointment.

You can help your
doctor diagnose and treat your condition by being prepared to answer the
following questions:

  • What is your major symptom, lightheadedness or
    vertigo?
  • How long have you had your symptoms? Do they come and go,
    or are they always present?
  • What were you doing when your symptoms
    started?
  • How often do you experience
    dizziness?
  • What makes your symptoms better
    or worse?
  • Do you have other symptoms that may be related to your
    major symptom? Symptoms may include:

    • Changes in vision, such as blurred or double
      vision, halos, or spots.
    • Chest
      pain.
    • Confusion.
    • Fainting or falling.
    • Heart
      palpitations, irregular heartbeat, or an unusually
      slow or fast heart rate.
    • Nausea or vomiting.
    • Numbness
      or tingling.
    • Weakness or changes in your ability to stand or walk.
    • Ringing in the ears (tinnitus) or
      loss of hearing.
    • Shortness of breath or a feeling of
      suffocation.
  • What medicines do you take? Make a list of both
    prescription and nonprescription medicines you use.
  • Do you have any
    health risks?

Before seeing your doctor, it may be helpful to keep track of
your symptoms. Use the questions above as a guide for what to include in your
diary of symptoms (What is a PDF document?).

Credits

ByHealthwise Staff
Primary Medical Reviewer William H. Blahd, Jr., MD, FACEP – Emergency Medicine

Current as ofMarch 20, 2017

Current as of:
March 20, 2017