something. An interesting aspect of allergies is that the
immune system of different persons reacts differently to
the same substance. One person may react normally to a
substance while the other could become allergic to it. As
soon as the body perceives danger due to the presence of a
substance, its immune system releases antibodies for its
protection. These antibodies cause a reaction by which the
cells are affected to release histamine. This histamine is
responsible for the symptoms of an allergy felt by an
individual. You must have surely felt symptoms like
itchiness, soreness on the skin, nose, throat, eyes, lungs
or intestines whenever you had contracted an allergy. This
process is repeated on subsequent contraction of the same
allergen.

Another strange thing about allergies is that they are
never predictable. They might disappear for no apparent
reason and reappear when one least expects them to. One may
be allergic to pollen for years on end and then suddenly
find that it does not affect one at all. This does not mean
that one has got rid of it. On the contrary, it is likely
to attack silently and suddenly.

The tendency to be allergy prone is often heriditary. We
will not necessarily develop the same allergies as our
parents but will be have a predisposition to get them. Lots
of children seem to suffer from allergies, but thankfully
many of these disappear when they grow up.

Many medicines are available to fight allergies. The doctor
only can prescribe medicines for some though most of them
could be bought over the counter from a drugstore.

The most logical way to prevent an allergy off course is to
avoid the allergen. This is not always easy. First of all
the allergen has to be detected. If it is a rarely used
product it is easy. If it is an essential or unavoidable
thing like pollen, it becomes very difficult. One cannot
keep the windows closed all the time or avoid the outdoors.
Sometimes a family is even forced to abandon or give away a
pet, as a family member is allergic to it.