Posts Tagged ‘allergic’

Allergy

Tuesday, November 22nd, 2011

The use of pillows and bedding made with feathers has been long considered as a potential source of allergens. Therefore it is common to recommend to people, especially those suffering from allergies, the non-use of bedding made with feathers, even when the evidence against it is not very important. Recent studies have shown that cross-bedding made with synthetic compounds is associated with various respiratory effects at. In addition, synthetic pillows contain higher concentrations of different types of allergens compared with those made with feathers. Given these conflicting results would be weak evidence for recommending the use of bedding made with synthetic materials. In a Scandinavian study prospectively evaluated the relationship between the use of bedding made with feathers and frequency of respiratory effects through the monitoring of children up to age 4 years.

Methods
We included children born in Oslo two major clinics over a period of 15 months, a total of 3 754 children. The study included follow-up at 6, 12, 18 and 24 months, and then at 4 years as part of a cross-sectional population-based 4-year-old Oslo in 1996. The proportion of participants at follow-up was 81% at 2 years and 67% at 4 years. The primary effects were to evaluate bronchial obstruction during the first 2 years and current asthma and allergic rhinitis at 4 years. Bronchial obstruction was defined as the presence of 2 or more episodes with symptoms and signs of obstruction or one episode lasting more than 1 month in the first 2 years of life. One of these episodes should have been diagnosed by a physician, with at least three of the following signs and symptoms: wheezing, respiratory depression, stridor, and tachypnea forced expiration. (more…)

Childhood allergy to cow’s milk

Tuesday, July 19th, 2011

Regional level is not known accurately the prevalence of allergy to cow’s milk. Its incidence is not known world, which seems to be very variable. So say experts from the World Allergy Organization (WAO, according to its acronym in English) and other scientific institutions in a paper published in the journal Current Opinion in Allergy and Clinical Immunology.

“This allergy is the result of an exaggerated and damaging the immune system to certain proteins in cow’s milk. Your symptoms may be gastrointestinal reactions, skin, or respiratory tract (respiratory symptoms). There are rare cases where a severe allergy such causes anaphylaxis is a generalized reaction of the immune system can become serious, “said the Agency CyTA a member of the panel of experts convened by WAO, Dr. Carlos E. Argentina Baena-Cagnani, who serves as academic director of the Center for Research in Respiratory Medicine, Faculty of Medicine, Catholic University of Cordoba. He added: “To determine the prevalence of this type of allergy that affects children early in life-usually up to four years-old, is one of the challenges we face today.”

According to Baena-Cagnani children can have two kinds of unwanted side effects due to intake of cow’s milk, one is the intolerance and other allergies. Many times the symptoms are confused, but what is the difference? “The difference is that intolerance is not immune mechanisms involved. A well-known case is the lack of lactase. In this case the children lack the enzyme that aids digestion of lactose, a sugar found in milk. In contrast, allergy is a response from the defense system turns against the body, “says the specialist who also serves as a member of the Executive Committee of the Global Alliance against Chronic Respiratory Diseases (GARD, according to their acronym in English) of the World Health Organization. (more…)

Symptoms of food allergies in children

Tuesday, May 31st, 2011

 allergies in childrenIt is believed that about 5% of children have or have had an allergy caused by some food.

Food allergies have a strong hereditary component, but also associated with environmental factors and the early introduction of food.

The foods that most commonly cause allergies are peanuts, dairy products and eggs. It is curious to know that most allergies are caused by just five foods: peanuts, peanut Butter, egg, cow milk products and derivatives, and soybean and wheat. It can also cause it, although less frequently, chocolate, strawberries, tomatoes or seafood.

When a child eats these foods, if you are allergic to them, the body produces an immune response manifesting some symptoms after eating.

Let’s see what are the symptoms that allow us to suspect that the child may suffer food allergies .

There are three types of events that can occur in combination.

Digestive symptoms :
1. Swelling, especially around the mouth (lips, tongue, face, eyelids sometimes)
2. Difficulty swallowing
3. Abdominal pain, cramping, diarrhea, nausea and vomiting
4. Skin manifestations :

Itchy skin: the appearance of local or generalized urticaria
Rash or hives on the skin
Atopic dermatitis , inflammatory skin disease very common in young children
Respiratory manifestations :

Bronchial asthma
Rhinitis (nasal congestion)
Bronchospasm
Rarely there may be anaphylaxis immediately after eating the food. Is a drop in blood pressure, shortness of breath and unconsciousness. If this happens, requires immediate medical attention.

With respect to the time that symptoms may appear, are classified into three:

Immediate: begin within minutes after eating the food, usually within the first 30 minutes. Cause-effect relationship is very obvious and the most common symptoms are vomiting, urticaria, asthma and anaphylaxis.
Deferred : are symptoms that appear after two hours of eating the food. The most common are gastrointestinal symptoms such as diarrhea associated with protein-sensitive enteropathy.
Late : appear days after eating the food, such as atopic dermatitis.
It is very important to observe the child after giving one of the most common foods that cause allergies, especially when they are consumed first. If you notice any of these symptoms associated with food you should consult with your pediatrician who will conduct testing to confirm allergy or not.

The treatment is to avoid the food you are allergic to the reaction subsides, but do not remove the food until they confirm that it is an allergy because there are times when food allergy is attributed when you really are not.