The condition affects the respiratory system when the muscles around the airway walls tighten and narrow with the lining of the small airways to the lungs - the bronchioles - becoming inflamed and swollen .
This results in difficulty breathing and symptoms include coughing, wheezing, tight feelings in the chest and breathlessness.
It is important that anyone who develops a respiratory problems consult their GP for a proper diagnosis.
If asthma is confirmed one of the five commonly used groups of drugs administered by an inhaler will probably be prescribed, while in severe cases tablets containing steroids may also be taken by mouth.
For more than forty years various research studies (click HERE for list of some of the published papers) have indicated that hypnotherapy can be an effective means of helping asthmatic patients control, reduce and in some cases, eliminate their condition.
To many this may seem surprising as asthma is often - but not always - a response to triggers such as dust, animals, pollen, mites, weather conditions, fumes or certain foods.
Sometimes the condition is categorised into "extrinsic" and "intrinsic" asthmas.
Extrinsic asthma is when the immune system responses to external allergens of one sort or another.
Intrinsic asthma is when the trigger is anything except an allergy - including factors such as stress, arguments, social occasions even laughter.
The trigger can be psychosomatic which might best be defined as a physical condition influenced by psychological or emotional factors