WORLD ASTHMA DAY (6th
MAY)
Asthma, the condition where you
feel as if you are starving for air to breathe is actually a chronic disease of
the respiratory air passages which inhibits the smooth passage of air while breathing.
During the asthma attack there occurs narrowing of the airways to lungs. This
is mainly due to constriction of the smooth muscle cells that surrounds the
bronchi and the resulting inflammation.
SYMPTOMS
The symptoms of asthma mainly include:
- Coughing
- Wheezing
- Difficulty in breathing
- Difficulty in speaking
- Chest tightness
- Weakness
CAUSES
Asthma is actually a type of allergic reaction which is induced when exposed
to certain triggers. There are different types of triggers. The triggers
which cause asthma in one person may not cause it in other i.e., these triggers
may differ from person to person with each one having a specific one. Some of
the most common asthma triggers are:
- Air pollution
- Tobacco
- Wood smoke and fumes
- Cold climate
- Some food stuffs
- Certain medicines
- Fugal spores
- Perfumes
- Pollen
- Physical exercise
- Emotional factors like stress, laugh etc.
- Certain food preservatives
- Respiratory infections like sinusitis, flu, cold, bronchitis etc.
- Animal fur
TYPES
Traditionally asthma has been classified in three major types.
1. Extrinsic asthma
2. Intrinsic asthma
3. Mixed asthma.
1. Extrinsic Asthma also known as atopic
asthma/ allergic asthma is due to the body’s immune system
response to inhaled allergen or antigen. When an allergen enters the body, the
immune system recognizes it as foreign substance or antigen and produces
corresponding antibodies to fight against it. Thus in extrinsic asthma there is
an increase in the serum IgE level.
2.Intrinsic Asthma / Non allergic asthma on the other hand
is caused due to factors like infection, cold whether, emotional factors, some
medicines, exercise, food preservatives etc. This type of asthma is not allergy
related and no antibodies are produced. Here asthma attack is induced due to
the irritation of muscle cells or nerve cells in the airways and those
suffering from intrinsic asthma will be hypersensitive.
3. In Mixed Asthma, the attack may be induced either
by allergens or by certain extrinsic factors.
Asthma has been further categorized into different types
as follows:
- Childhood Asthma:- In childhood asthma the individual suffers from
asthma attack only during his childhood and gets cured as he grows up.
This happens as the body undergoes various hormonal and functional changes
during the growth phase.
- Adult Onset Asthma :- Adult onset
asthma is usually affected after the age of 20 and is seen most commonly
in women than in men. Asthma attack in this case is induced by allergens
such as smoke, dust, polluted air etc.
- Exercise Induced Asthma :- Exercise induced
asthma is also known as sports induced asthma and occurs after an
exhausting exercise due to change in temperature of air in the lungs.
- Occupational Asthma:- Occupational
asthma mainly develops due to the exposure to certain allergens such as
gasses, plastics, dust, smoke etc. at their work place. Here the most
common symptoms are running nose, irritation of eye, and cough rather than
severe wheezing. Some of the most common jobs which might lead to this
type of asthma include farming, animal breeding, painting, carpentry etc.
- Nocturnal Asthma:- In Nocturnal or night time asthma the symptoms
are severe during night time and early hours of morning. This shows that
the circadian rhythm has direct influence on asthma symptoms. The patient
may have cough, wheezing and other symptoms when lying down for sleep or
some times the symptoms may not be noticed until they awoke in the middle
of sleep.
- Cough Variant Asthma:- In this case, the
asthma patients have severe cough as the major symptom. This can be severe
either in the night time or day time.
- Allergic Asthma:- Allergic asthma is mainly triggered by specific
allergens. Most common symptoms include sneezing, running nose and
coughing.
- Bronchial Asthma:- This is an allergic reaction which is induced by
hypersensitivity to allergens like dust, smoke, pollen and so on or to
certain food particles. In this case due to mucus accumulation in the air
passage there will be difficulty in breathing.
PREVENTION:
- Use your air conditioner.
- Decontaminate your decor..
- Maintain optimal humidity.
- Prevent mold spores.
- Reduce pet dander.
- Clean your
home regularly.
- Cover your nose and mouth if it's cold out.
- Get regular exercise.
- Maintain a healthy weight.
- Eat fruits and vegetables.
- Control heartburn and gastroesophageal reflux
disease (GERD).