An allergy is a hypersensitive disorder
of immune system.
An allergy is a type of reaction of the immune
system. Substances that often cause allergic reactions are pollen, dust mites, mold spores, pet
dander, food, insect stings and medicines
The body's defense mechanism works
over time to react against these foreign particles (known as allergens
), which may pose danger to
normal functioning of the human system. People with allergies have an exaggerated response of the immune system
most allergic reactions, it is responding to a false alarm.
Allergies can cause a running nose, sneezing, coughing, itching, skin rashes or asthma
Symptoms vary from person to person and with the type of allergen. Rarely,
allergies can set in a severe reaction called anaphylaxis
, which is life-threatening. Allergies can develop at any age
and the risk of developing allergies is often related to
the presence of allergies in the parents.
Together with the help of physical examination, history and allergy testing
, the doctor can
diagnose the cause of allergy and design treatments that will help the patient
or minimizing the exposure is the most effective preventive measure against
glucocorticoids, anti-cholinergic drugs and decongestants
help to alleviate
the symptoms of allergy. Adrenaline
is used to treat severe allergic reactions called anaphylactic reactions.
can either reduce the severity or eliminate
hypersensitivity reactions. This is done by vaccinating the person with
progressively larger doses of the allergen in question.
For this general concept of the changed capacity for reaction, I propose the term "allergy". "Allo" denotes the deviation from the original state, from the behavior of the normal, as in "allorhythmia","allotropy".
- Clemens Peter Pirquet von