What is Asthma?

Asthma is a long-lasting (chronic) disease of
the lungs and airways (bronchi) that affects 5 people in every 100. In
children, this figure is higher and rising. Asthma is
characterised by attacks of breathlessness, tight chest, wheezing and
coughing which are caused by the airways becoming narrowed and inflamed.
Some people may have these symptoms all of the time and others may be
normal between attacks.

How do you get Asthma?

Asthma can arise at any age, but why some
people have the disease and others don't is not known. People with
asthma have airways that are more sensitive than normal.

• Doctors know, however, that asthma can sometimes run in families.
  
• Asthma
  attacks can be set off by many different things, these are called
  triggers. Examples include cold air, vigorous exercise and stress.
  
• These
  triggers may also include 'allergens'. These are present in the
  environment and contain chemicals that trigger allergic reactions.
  
• Allergens include, for example, pollen, animal danders, house dust, pollution, some foods, perfumes and cigarette smoke.
  
• Allergens
  cause the lining of the airways to become swollen and inflamed. It
  produces extra mucus and the muscles of the airways tighten. There is
  then less room for the air to pass in and out.
  
• Attacks may be more frequent or severe in people who have a chest infection.
  

How serious is Asthma?

Asthma
is not generally considered by doctors to be a serious illness in most
people who have it, mainly due to the mildness of symptoms and the range
of very effective medicines that control these symptoms and stop asthma
worsening. Asthma does, however, have an effect on quality of life
because attacks can be unpleasant and distressing and can restrict
activity. Whilst most sufferers learn to live with and manage their
condition, for some it can be disabling. In exceptional cases, asthma
can be life-threatening, particularly if it is not treated adequately or
promptly. For some of these, an attack is so severe that it results in
death.

How long does Asthma last?

Asthma attacks come and
go, with wide variation in the symptoms at different times. Many people
with asthma have problems only occasionally but others struggle with it
every day. Modern medicines control and relieve symptoms and so attacks
may only last a few hours or minutes, but without treatment this may go
on for several days. Some children grow out of asthma and some people
are only affected at different times of the year. However, the period of
time during which people may have asthma attacks can last for many
years or throughout life.

How is Asthma treated?

There is no
cure for asthma, but there are different types of medicines that will
help to keep it under control and relieve symptoms.

• Most
  sufferers must be given a type of medicine called a preventer, which is
  usually an anti-inflammatory steroid (of the glucocorticosteroid type)
  that treats the underlying causes of the asthma. These are usually given
  from an inhaler.
  
• Even if symptoms are not present,
  sufferers should keep taking the preventer medicines, as this will
  greatly decrease the risk of suffering asthma attacks. This will help
  many asthmatics to live a normal active life.
  
• One type of preventer can be taken as tablets and can be used together with steroids.
  
• Another
  sort of medicine is called a reliever that is used during an asthma
  attack and may be contained in an inhaler. This contains a
  bronchodilator medicine that opens up the air passages (bronchial tubes)
  of the lungs and works in a few minutes.