About Asthma
Asthma is
a chronic disease that affects your airways, which are the
tubes that carry air in and out of your lungs. If you have
asthma, the inside walls of your airways are inflamed
(swollen). The inflammation
makes the airways very
sensitive, and they tend to react strongly to things to
which you are allergic or find
irritating.
When the
airways react, they get narrower and less air flows through to
your lung tissues. This causes symptoms like wheezing (a
whistling sound when you breathe), coughing,
chest
tightness, and trouble
breathing.
Symptoms
Common
asthma symptoms include:
- Coughing.Coughing from asthma is often worse at
night or early in the morning, making it hard to
sleep.
- Wheezing.Wheezing is a whistling or squeaky sound
when you breathe.
- Chest
tightness.This
can feel like something is squeezing or sitting on
your chest.
- Shortness of
breath.Some people
say they can't catch their breath, or they feel breathless
or out of breath. You may feel like you can't get enough
air in or out of your lungs.
- Faster breathing or noisy
breathing.
Causes
It is not
clear exactly what makes the airways of people with asthma
inflamed in the first place. Your inflamed airways may be due
to a combination of things. We know that if other people in
your family have asthma, you are more likely to develop it. New
research suggests exposures early in your life (like tobacco
smoke, infections, and some allergens) may be
important.
There are
things that can make asthma symptoms worse and lead to asthma
attacks. Some of the more common things that can worsen your
asthma symptoms are exercise, allergens, irritants, and viral
infections. Some people only have asthma with exercise or a
viral infection. The lists below give some examples of things
that can worsen asthma symptoms.
Allergens
- Animal dander (from the skin, hair, or feathers of
animals)
- Dust
mites (contained in house dust)
- Cockroaches
- Pollen from trees and grass
- Mold
(indoor and outdoor)
Irritants
- Cigarette smoke
- Air
pollution
- Cold
air or changes in weather
- Strong odors from painting or
cooking
- Scented products
- Strong emotional expression (including crying or
laughing hard), and stress
Others
- Medications such as aspirin and
beta-blockers
- Sulfites in food (dried fruit) or beverages
(wine)
- A
condition called gastroesophageal (GAS-tro-e-sof-o-JEE-al)
reflux disease (GERD) that causes heartburn and can worsen
asthma symptoms, especially at night.
- Irritants or allergens that you may be exposed to
at your work such as special chemicals or
dusts
- Infections.
This is
not a complete list of all the things that can worsen asthma.
People can have trouble with one or more of these. It is
important for you to learn which ones are problems for you.
Your doctor can help you identify which things effect your
asthma and ways to avoid them.
Treatment
You and
your doctor together can decide about your treatment goals and
what you need to do to control your asthma. Asthma treatment
includes:
- Avoiding things that bring on your asthma symptoms
or make symptoms worse. Doing so can reduce the amount of
medicine you need to control your asthma. Allergy medicine
and allergy shots in some cases may help your
asthma.
- Using
asthma medicines.
With
proper treatment, you should ideally have these
results:
- Your
asthma should be controlled.
- You
should be free of asthma symptoms.
- You
should have fewer attacks.
- You
should need to use short-acting bronchodilators less
often.
- You
should be able to do normal activities without having
symptoms.
Medications
There are
two main types of medicines for asthma:
Quick Relief medicines give
rapid, short-term treatment and are taken when you have
worsening asthma symptoms that can lead to asthma episodes or
attacks. You will feel the effects of these medicines within
minutes.
Long-term Control medicines are
taken every day, usually over long periods of time, to control
chronic symptoms and to prevent asthma episodes or attacks. You
will feel the full effects of these medicines after taking them
for a few weeks. People with persistent asthma need long-term
control medicines.
Ask your doctor about how you
can help take care of your own asthma. You should
know:
- How
to take your long-term daily medication
correctly
- What
things tend to make your asthma worse and ways to avoid
them
- Early
signs to watch for that mean your asthma is starting to get
worse (like a drop in your peak flow number or an increase
in symptoms)
- How
and when to use your peak flow meter
- What
medication and how much to take to stop an asthma attack
and how to use it correctly
- When
to call or see your doctor
- When
you should get emergency treatment
Natural
Remedies
Lycopene,
an antioxidant related to beta-carotene and found in tomatoes,
helps reduce the symptoms of asthma caused by exercising. In
one double-blind trial, over half of people with
exercise-induced asthma had significantly fewer asthma symptoms
after taking capsules containing 30 mg of lycopene per day for
one week compared to when they took a
placebo.
References for
Asthma Article
- Neuman I, Nahum H, Ben-Amotz A. Reduction
of exercise-induced asthma oxidative stress by lycopene, a
natural antioxidant. Allergy 2000;55:1184–9.
- Collipp PJ, Chen SY, Sharma RK, et al.
Tryptophane metabolism in bronchial asthma.
Ann
Allergy 1975;35:153–8.
- Weir MR, Keniston RC, Enriquez JI, McNamee
GA. Depression of vitamin B6 levels due to
theophylline. Ann
Allergy 1990;65:59–62.
- Collipp PJ, Goldzier S III, Weiss N, et
al. Pyridoxine treatment of childhood bronchial
asthma. Ann
Allergy 1975;35:93–7.
- Reynolds RD, Natta CL. Depressed plasma
pyridoxal phosphate concentrations in adult
asthmatics. Am J
Clin Nutr 1985;41:684–8.
- Sur S, Camara M, Buchmeier A, et al.
Double-blind trial of pyridoxine (vitamin B6) in the
treatment of steroid-dependent asthma.
Ann
Allergy 1993;70:141–52.
- National Institutes of
Health
Health
Related Websites
The National Cancer
Institute
The National Eye
Institute
The National Heart, Lung,
and Blood Institute
National Institute on
Aging
National Institute of
Allergy and Infectious Diseases
National Institute of
Arthritis and Musculoskeletal and Skin Diseases
National Institute of
Diabetes and Digestive and Kidney Diseases
National Institute on Drug
Abuse
National Institute of Mental
Health
National Institute of
Neurological Disorders and Stroke
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