Tuesday, October 27, 2009

Immune System in Allergy

It is my understanding that some people are being given cyclosporine and other strong immunosuppresive treatments to reduce allergies. There are some problems with this kind of treatment, including:

Many forms of immune disease originate from a long term low level infection of _any_ sort, including bacteria, yeast, viruses, or parasites, or other persistent factors that the body has not been able to completely eliminate. With the immune system on alert and without rapid success, the natural mutation processes of the immune system begin to generate a broader set of antibodies. This is a strategy which will likely find another chink in the offending organism's armor; but may also hit upon a chink in the body's own armor, _possibly_ resulting in auto-immune disease if a prolonged battle ensues.

How does a person become "allergic?"

Allergens can be inhaled, ingested, or enter through the skin. Common allergic reactions such as hay fever, certain types of asthma, and hives are linked to an antibody produced by the body called immunoglobulin E (IgE). Each IgE antibody can be very specific, reacting against certain pollens and other allergens. In other words, a person can be allergic to one type of pollen, but not another. When a susceptible person is exposed to an allergen, the body starts producing a large quantity of corresponding IgE antibodies. Subsequent exposure to the same allergen may result in an allergic reaction. Symptoms of an allergic reaction will vary depending on the type and amount of allergen encountered and the manner in which the body's immune system reacts to that allergen.

Allergies can affect anyone, regardless of age, gender, race, or socioeconomic status. Generally, allergies are more common in children. However, a first-time occurrence can happen at any age, or recur after many years of remission. Allergies tend to run in families. Hormones, stress, smoke, perfume, or environmental irritants may also play a role in the development or severity of allergies.

Allergy tests

There are two types of tests to find out if a child is allergic:

  • Skin prick tests è The skin is punctured with a small lancet through a drop of the suspect allergen. A minute amount of allergen gets into the skin, to see if a reaction occurs. After 15-20 minutes, the presence of a wheal lets know which allergens the patient is sensitized to.

  • Blood tests è They are complementary to skin tests. They allow to confirm and to quantify the degree of sensitization. A sample of 2-3 cc of blood is enough to study sensitization to a dozen of different allergens.

The Phadiatop® test is a blood qualitative test for the presence of sensitization: a positive result means that the patient will most probably be allergic, while a negative test means the patient will most probably not be allergic. This test is used as a screening method for allergy.

It has been estimated that a person will come in contact during lifetime with thousands of substances capable of inducing allergy.

Fortunately, only a few of them will cause problems. Finding the cause of allergy is sometimes a very difficult task, and the number of tests to be performed for a patient is limited, specially in children. People usually become allergic to substances they have a close and frequent contact with: the more frequent and more intense a contact with a substance, the more probable that one becomes allergic to it. Therefore, the tests to be performed must be based on a detailed medical record, to select the allergens which more probably are involved. For instance, a child with conjunctivitis when near a cat, will probably be sensitized to cat dander. When symptoms appear in Spring, in the countryside, pollen allergy is probable. The specialist must know what are the most relevant plants, molds or mites in the area. Sensitization to pollen of olive tree is very common in the Mediterranean area, while allergy to birch pollen is exceptional. The opposite happens in North Europe countries. House dust mites species may vary according to climate conditions.
On the other side, it is essential to make a correct interpretation of results of tests. Not seldom, a patient may have positive results in tests against some allergens that are not clinically relevant, that is, allergens which are not responsible for triggering symptoms in that patient.
It is important to realize that sometimes symptoms appear when there is a time coincidence of several factors which would not be able to induce those symptoms separately (an amount of allergens together with a viral infection, or exercise, or cigarette smoke, cold air, pollution,…).
This means that the physician who performs, reads and interprets these tests must be a skilled specialist, with the necessary experience and training to reach a accurate diagnosis.

Factors contributing to development of allergy.

  1. Predisposing factors:

    • The Atopic Condition. Some people have a genetic predisposition to develop allergic diseases. This predisposition is inheritable. It is more probable that a child is allergic, when other members of the family (mother, father, siblings) are allergic.

    • Gender. Some allergic diseases (asthma) are more frequent in boys than in girls.

  2. Causal factors è ALLERGENS

    • Indoor allergens:

      • House dust mites

      • Molds

      • Pets dander

      • Cockroaches

    • Outdoor allergens

      • Molds

      • Pollens

      • Animal dander

    • Occupational Allergens è They affect adults who are exposed to some substances because of their jobs (flour in the case of bakers, wood dust in carpenters,…)

  3. Coadjuvating and Triggering Factors: These factors do not cause allergy by themselves, but they facilitate that someone becomes allergic to factors described above, or they can trigger symptoms in an already allergic person:

    • Air pollution

    • Cold air

    • Cigarette smoke

    • Exercise

    • Respiratory infections

Allergy and concomitant diseases

Allergy is often more severe than commonly thought. It can affect to a great extent the quality of life of patients. But, even more, allergy can cause or enhance the development of other associated diseases. Consciousness is the key: when someone knows he is allergic and to what allergens, the difference about how to treat and manage allergy and its consequences can be noteworthy.
Otitis
Otitis (inflammation of the ear) are a cause of frequent visits to the pediatrician, and they are responsible for the highest percentage of causes of hearing loss in children. Recent studies suggest that food allergy may be responsible for repeated episodes of otitis in infants and small children.
Asthma
Asthma is the most frequent chronic disease in childhood, and it affects about 10% of children. The symptoms of asthma are due to bronchial inflammation, which is caused by allergy to house dust mites, pets, molds, pollen, and so on. Identifying and avoiding these allergens will improve symptoms.
Skin rashes
Skin rashes, such as eczema, are very common in infants. They often appear in the first months of life, and they may be caused by allergy to food, like milk or egg. But, furthermore, eczema in a small child must alert about the development of allergy on the long term. About half of the children with eczema will have asthma in the future. Again identifying and controlling the involved allergens will again be the key.
Allergic rhinitis
Rhinitis is an inflammation of the inner layers of the nose, which causes sneezing, itching, obstruction. As with previous diseases, it is essential to find out if it is of allergic nature, and which allergens are involved.
Sinusitis
Nasal and paranasal sinuses are cavities in the skull bones, communicated with the nose through small holes. These can be obstructed by inflammation of the inner layers of the nose, giving rise to sinusitis. Sinusitis (inflammation of sinus) would thus be caused by rhinitis, and the proper treatment of the latter would resolve the former.

Symptoms,Causes andTreatments

Symptoms of Allergies

  1. Common sites of the body that can be affected are eyes, ears, nose, chest, intestines and skin.
  2. The same allergen can cause different symptoms in different people.
  3. Allergy symptoms include swelling of the face and eyes, stuffy or runny nose, diarrhea, shortness of breath, conjunctivitis, sneezing, recurring headaches, hay fever, eczema, dizziness, asthma,high blood pressure, chest pain, nervousness, gastric ulcer.

Causes of allergy

Allergies can be caused due to some of the following:

  1. Internal disharmony, lowered resistance due to faulty diets, style-of living.
  2. Foods like fish, eggs, milk, wheat, strawberries, oranges, tomatoes, potatoes, cabbage and chocolates.
  3. Chemical additives and preservatives present in processed food and excess intake of sugar.
  4. Emotional and psychological stress can be the causes.
  5. Babies between 10-12 months of age are to be breastfed exclusively, however allergy is caused if they are fed with whole milk, meat, cereals and corns.
  6. Other wide-range of substances that are the causes are drugs, dust, pollen, vaccines, animal hair, serum, poisonous plants, sunlight, heat and cold.

Allergy Treatments and cures

  1. The causes of allergy should be traced and avoided when possible.
  2. Improve immunity and general health.
  3. Strengthen overall resistance and fight allergens by fasting on fresh fruit juice for 5 days.
  4. Follow with a mono-diet of fruits or vegetables for 1 week.
  5. Later one food each is added on 2nd and 3rd week.
  6. After 4 weeks protein foods can be introduced.

Natutal Cures

A classical allergy is caused by a foreign protein getting into the body and not being recognised by that body as part of itself. The body therefore makes vigorous attempts to rid itself of the offending protein. This reaction may be very severe and excessive.

There are many things that can cause problems:-

  • Injected:- like bee stings or wasp stings causing anaphylaxis
  • Breathed in:- like tree or grass pollens causing asthama or perennial rhinitis (which is like all year round hayfever)
  • Eaten:- like peanuts which cause peanut allergy or a combination of foods which cause more generic food allergies.
  • Touched:- like latex found in surgical gloves which can cause Latex Allergy

The reactions may become more severe each time you are exposed to the offending protein and have the potential to lead to a fatal anaphylaxis.


You must seek medical help if you think that you have a classical allergy
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The editorial board feels that because allergies are potentially very serious they are initially best dealt with by mainstream medicine, if possible.

Once a diagnosis is made and the appropriate rescue medicine has been prescribed there is often a great deal that can be done to prevent attacks. You can for instance reduce the population of house dust mites by using special bedding and so on.