Dust Allergy Symptoms
The immune systems of some people are programmed to overreact as soon as they come in contact with a particular substance. The body reacts to indicate that it does not accept that particular substance, and tries to get rid of the substance as soon as possible. These specific substances are called allergens and the reaction they evoke is called an allergy. These substances might be harmless to most people, but people allergic to them register these allergens as foreign bodies and their immune system reacts to fight these allergens off.
A person allergic to dust will react to almost every allergen present in the atmosphere, like dust mites, cat or dog fur, mold, animal dander, pollen, etc. These allergens usually trigger symptoms of a dust allergy either immediately or, within a few hours of coming in contact with the patient.
Allergies are not developed instantly when you come in contact with the allergen for the very first time. The body first identifies the allergen and generates antibodies that will react to it. It then prepares the body to be sensitive to that particular allergen. This process of developing a predisposition against allergens is known as sensitization. The process of sensitization might be an instantaneous development or it may take years.
▶ The body must first be exposed to certain substances (allergens) of the atmosphere that will evoke the immune system to react.
▶ As soon as the allergen enters the body, the immune system generates specific antibodies.
▶ Antibodies are natural proteins generated by the body to fight against foreign bodies like harmful bacteria and viruses and prevent infections. There are five types of antibodies: IgA, IgD, IgE, IgG, IgM. The antibody generated during an allergic reaction is IgE.
▶ Though IgE is produced by everyone, it is produced in large quantities by people who are allergic.
▶ The antibodies, together with certain cells, release chemicals like histamine, into the bloodstream.
▶ Histamine causes wheezing if it is released by the lungs, itching sensations when released by the skin, and causes extreme drop in the blood pressure if released by the entire body; thus initiating an allergic reaction.