Seriousness of allergy rhinitis

December 11, 2009 by admin  
Filed under Diseases And Conditions

Alexander Chong asked:


What is actually allergy rhinitis? Allergy rhinitis is an allergic disease, which is caused by the sensitinogen that reacting on the mucous membranes in the nasal cavity. It has two types; those are perennial and seasonal allergic rhinitis. Perennial allergic rhinitis occurs throughout the year; whereas, seasonal allergic rhinitis usually occurs during the blossoming or flowering season. In this season, plants start to release their pollen for breeding purpose. Pollen is one of the sensitinogens to the allergic rhinitis. Clinical features of allergic rhinitis are; itching in the nose, sneezing, watery nasal discharge and nasal obstruction. There are about 20 % of adults and children have seasonal or perennial allergic rhinitis.

Although it is prevalence in most of the countries regardless tropical or seasonal, most of the conditions are not treated adequately and the consequence is that allergic rhinitis becomes chronic. The chronic state of allergic rhinitis usually will lead to more serious complications of the upper and lower airways such as asthma, sinusitis and otitis media with effusion. Otitis media is an inflammation of the middle ear. Fluid is built up in the middle ear and causes temporary lose of hearing. However, if this chronic disease is not treated properly, it may lead to permanent hearing impairment.

 A few medical scientists had carried out surveys to study the epidemiologic links between allergic rhinitis and other airway diseases. What they had found out were, 78% of patients who had asthma were also had allergic rhinitis. They also found out that 99% of adults and 93% of adolescents, who had allergic asthma, also had allergic rhinitis. Besides, the other study that had been carried out for 23 years was found out that college students who previously had allergic rhinitis had three times higher the possibility to have asthma compared to those students who had not had allergic rhinitis What is actually allergy rhinitis? Allergy rhinitis is an allergic disease, which is caused by the sensitinogen that reacting on the mucous membranes in the nasal cavity. It has two types; those are perennial and seasonal allergic rhinitis. Perennial allergic rhinitis occurs throughout the year; whereas, seasonal allergic rhinitis usually occurs during the blossoming or flowering season. In this season, plants start to release their pollen for breeding purpose. Pollen is one of the sensitinogens to the allergic rhinitis. Clinical features of allergic rhinitis are; itching in the nose, sneezing, watery nasal discharge and nasal obstruction. There are about 20 % of adults and children have seasonal or perennial allergic rhinitis.

Although it is prevalence in most of the countries regardless tropical or seasonal, most of the conditions are not treated adequately and the consequence is that allergic rhinitis becomes chronic. The chronic state of allergic rhinitis usually will lead to more serious complications of the upper and lower airways such as asthma, sinusitis and otitis media with effusion. Otitis media is an inflammation of the middle ear. Fluid is built up in the middle ear and causes temporary lose of hearing. However, if this chronic disease is not treated properly, it may lead to permanent hearing impairment.

A few medical scientists had carried out surveys to study the epidemiologic links between allergic rhinitis and other airway diseases. What they had found out were, 78% of patients who had asthma were also had allergic rhinitis. They also found out that 99% of adults and 93% of adolescents, who had allergic asthma, also had allergic rhinitis. Besides, the other study that had been carried out for 23 years was found out that college students who previously had allergic rhinitis had three times higher the possibility to have asthma compared to those students who had not had allergic rhinitis before.

Many researches and works had been carried out to study the epidemiologic link between allergic rhinitis and sinusitis. The results had been well documented. The earlier study showed that 53% of children, who had allergic rhinitis, also had sinusitis. They proved this from the children abnormal sinus radiographs. Whereas, recent study showed that up to 70% of children, who had allergy and chronic rhinitis, had abnormal sinus radiographs. 78% of the patients who had recurrent sinus infection, rhinitis allergy was coming together with their extensive sinus disease. For the children who had otitis media with effusion, 40 to 50% of them had allergic rhinitis. This was confirmed by positive allergy skin tests or increased serum IgE antibodies to specific allergens test.

Scientist had proposed a model for the development of sinusitis and otitis media. Their proposed model assumes that the earliest cause for sinusitis is not bacterial infection but it is due to the obstruction in the nasal cavity, which hinders the normal movement of air and secretions in and out of sinuses. Virus that causes nasal inflammation is upper respiratory tract infection (URTI) type, which is called rhinovirus. Research had been carried out to study the effect of this virus to the nasal diseases. The result showed that when rhinovirus is inoculated into the nasal passage of a group people, one third of these people would develop sinus abnormities and typical sinus disease symptoms. Another study also showed that 87% of healthy adult, who voluntarily went through self-diagnosed colds, had maxillary sinuses illness.

Fluid inside the sinus cavity must be drained normally to keep the nasal healthy. When nasal being infected by bacteria or virus, or exposure to allergen, dust or chemicals, thicken secretion will be developed and it has higher possibility blocks the narrowed sinus ostia (opening that connect to the sinus cavity). Accumulation of these secretions in the sinus cavity will lead to further obstruction, mucosal swelling and also thicken the sinus mucosa. This will create an anaerobic environment that further favorite the bacterial growth and lead to infection. Congested sinus ostia must be resolved if not, it will lead to recurrent acute and eventually chronic nasal disease. This model also explained why chronic sinusitis is resistant to the antimicrobials treatment alone. To treat the sinusitis properly, antihistamines and corticosteroids have to be used as a combination with the antimicrobials treatment.

A similar model had been developed by scientist to explain the occurrence of otitis media with effusion. 83% of the children had at least once occurrence of acute otits media by the time they reach 3 years old. This model hypothesizes that nasal inflammation that is caused by allergens or URTIs virus will further cause inflammatory swelling and obstruction of the Eustachian tube. Obstruction of the Eustachian tube will increase negative pressure in the middle area and without improper ventilation; fluids will accumulate in the middle ear. Obstructed Eustachian tube will open occasionally with an effusion and this will **** the inner nasal secretion, which contain bacteria, virus and allergens into the middle ear cavity. Consequently, this will cause acute bacterial otitis media.

From the information above that have been gathered from various scientific publications, we know that common nasal allergy should not be left untreated. This is because it will lead to obstruction, fluid accumulation, bacterial infection and acute disease. If these diseases are not treated properly or successfully, a chronic state of inflammation, nasal congestion, and sinus infection will be developed. And it can further cause mucosal damage and ultimately, chronic disease. If the disease spreads to the middle ear, it will cause permanent hearing impairment

 



How Do I Know If I Have Allergies?

December 6, 2009 by admin  
Filed under Health

Cindy Heller asked:


Most everyone has an idea of what an allergy is. Allergies are so common, in fact, that it seems acceptable to discuss allergy symptoms at a cocktail party with perfect strangers.

An allergy is an abnormal reaction by a person’s immune system to a normally harmless substance. A person without allergies would have no reaction to this substance, but when a person who is allergic encounters the trigger, the body reacts by releasing chemicals which cause allergy symptoms.

In children, allergic disease first occurs as atopic dermatitis (eczema) or food allergies. Children with atopic dermatitis are then at an increased risk of developing allergic rhinitis and asthma; both are more likely to occur in school-age children.

Typically, atopic dermatitis goes away by adulthood, as do many types of food allergies.

Allergic rhinitis and asthma, however, most often start during the adolescent, teenage and young adult years, and are likely to persist throughout a person’s life. The severity of allergic symptoms, however, may wax and wane, and even temporarily disappear during a person’s life.

Atopic Dermatitis

This is typically the first sign of allergies and is seen in 10 to 20% of all children, frequently during infancy. Atopic dermatitis, or eczema, is characterized by itching, with rash formation at the sites of scratching. The rash is typically red and dry, may have small blisters, and can flake and ooze over time.

In infants and very young children, this rash involves the face (especially the cheeks), chest and trunk, back of the scalp and may involve the arms and legs. This distribution reflects where the child is able to scratch, and therefore usually spares the diaper area. The location of the rash changes in older children and adults to classically involve the skin in front of the elbows and behind the knees. Food and environmental allergies have been shown to worsen atopic dermatitis.

Food Allergies

Food allergies can occur at any age. Almost all people with food allergies will have a skin symptom, such as hives, swelling, itching or redness of the skin, as a result of eating the culprit food. These symptoms typically occur within a few minutes of eating the food in question, although they can be delayed up to a couple of hours.

Other symptoms of food allergies can include nausea, vomiting, stomach aches, diarrhea, breathing difficulties (asthma symptoms), runny nose, sneezing, and lightheadedness. In some cases, children can experience a severe allergic reaction, called anaphylaxis, which can be life-threatening.

Nasal Allergies

Allergic rhinitis occurs in up to 30% of adults and up to 40% of children. Symptoms of allergic rhinitis include sneezing, runny nose, itchy nose and eyes and nasal congestion. Some people may also experience post-nasal drip, allergic shiners (dark circles under the eyes), and a line across the nasal bridge from an upward rubbing of the palm of the hand on the nose, a sign called the “allergic salute.”

Asthma

Allergies are a major cause of asthma, a condition that occurs in about 8% of all people. Though it can occur at any age, it is most often seen in males in the pre-teen years and in females in the teenage years; asthma is the most common chronic disease in children and young adults. Sometimes asthma is difficult to diagnose in very young children, and may require a physician who is an asthma specialist.

Symptoms of asthma may include:

- Coughing — This can be the only symptom in some people who have “cough-variant asthma.” The cough is often dry, hacking, and may be worse with allergic triggers and after exercise. The cough may only be present at night. Cold air may also trigger this symptom.

- Wheezing — This is a high-pitched, musical-like sound that can occur with breathing in and out in people with asthma. Wheezing usually occurs along with other asthma symptoms, may get worse with exercise and with allergic triggers.

- Shortness of breath — Most people with asthma feel as if they’re not getting enough air at times, particularly when they are physically exerting themselves or when an allergic trigger is present. People with more severe asthma have shortness of breath at rest or wake-up with this symptom during the night.

- Chest tightness — Some people describe this as a sensation that someone is squeezing or hugging them. Children may say that their chest hurts or feels “funny.”

Many asthmatics have symptoms with exercise; this does not necessarily mean that their asthma is severe or uncontrolled.