Asthma is a very common respiratory disease. Of the more than 11 million Americans who suffer from asthma, more than 3
million, according to the National Center for Health Statistics, are younger than 18 years
of age. While the cause of asthma is not fully understood, great strides have been made in
treating this common disease.
Asthmatic people have airways that are very
sensitive to certain irritants and allergens, going into spasm when exposed to even normal
amounts. During an asthma episode the muscles surrounding the bronchial tubes constrict
and the lining inside the tubes swells and produces an excessive amount of mucous.
Triggers of asthma are divided into two groups, irritants and allergens. The most potent
(and preventable) irritant is secondhand cigarette smoke; other irritative triggers
include viral infections, rapid environmental changes in temperature and humidity, ozone,
smoke from a fireplace and sometimes exercise. Allergens responsible for triggering the
bronchial narrowing include dust, molds, pet dander, foods, and certain drugs. Some people with asthma only have an attack when two or more triggers are present at the same
time. To help control asthma it is important to identify the various triggering mechanisms
that affect symptoms and try to remove them from the environment.
The airway spasm and mucus plugging that occurs in
asthma lead to a variety of symptoms. Although asthma attacks vary in severity, during an
attack most have a hard time breathing and often make wheezing sounds (whistling
or squeaking sounds with respiration) in the process. Cough is also common from irritation
of the sputum. Typically the onset is sudden and you may experience tightness in the
chest, severe breathlessness, fatigue, and panic from a feeling of suffocation. No two
asthmatics react the same way and not every asthma attack is an obvious one. For instance,
some asthmatics may only have a constant cough or only experience wheezing during
vigorous exercise.
No one knows why some develop asthma, but
the condition tends to run in families. If both parents have asthma, at least one in three
of their kids may have similar symptoms. However, a considerable number of kids who wheeze have no close relatives with asthma. There is some indication that exposure to
certain injurious agents, such as cigarette smoke (even as a fetus), increases the risk for acquiring asthma.
While there is no cure for asthma, great strides
have been made in its treatment. The first approach is to identify the triggering
mechanisms and try to prevent exposure to those substances. While avoidance of the
offending trigger is recommended, it is often difficult, especially when a beloved pet or
common substances like house dust are involved.
Medication prescribed to treat and prevent asthma
is usually taken orally or inhaled. Antibiotics are not helpful unless a secondary
infection is present. The two main types of medications used to treat asthma attacks are
bronchodilators and anti-inflammatories. Bronchodilators are medications that relax the
muscles around the air tubes to relieve the attack. Examples included various preparations
of theophylline and adrenaline-like medications. . These drugs should be given as often as
necessary but as little as needed because of side effects, including stomach upset, rapid
heart beat, and nervousness. Bronchodilators can be administered by mouth or may be
inhaled. There has been a trend in recent years to rely on inhaled agents, which offer the
child increased benefits with fewer side effects. Medication can be given by a hand-held
inhaler or a nebulizer, which consists of an air compressor that delivers medication as a
"mist" so the drug us distributed directly where it is needed.
In severe attacks, steroids are helpful by
treating air tube inflammation. These drugs are very effective and when used in occasional
short courses are safe and control asthma flare-ups unresponsive to other treatments. The
physician should always be consulted before using steroids.
People with frequent asthma attacks can be given
a medication called cromolyn which blocks allergy-related chemicals from being released in
the lung. Allergy shots may benefit some with asthma under the guidance of an
allergist.
A severe asthma attack is a medical emergency and
you should be prepared to call your physician or go immediately to a hospital emergency department. The following signs indicate potential
problems:
- Blue or gray lips or flaring nostrils
- The child prefers to sit up and lean forward on
elbows or arms
- The spaces between the ribs become depressed
- The heart rate becomes rapid
- The child is unable to say more than a few
words between breaths
- The child is unable to hold down liquids or
their medication
Virtually all asthmatics can lead normal lives with active
physical activity and minimal inconvenience. While a "twitchy"
airway is a life-long problem, many people indeed "outgrow" their asthma as
they become teenagers. For these people, the airway apparently becomes less sensitive to
the different triggers that in the past set off their illness. Though asthma can
be a serious disease - and a frightening one - it needn’t ruin the quality
of life for its suffers. The important thing to remember is that modern
treatment for asthma is both effective and safe. Keep a positive attitude
and strive to maintain a normal life style.