Asthma attacks due to respiratory allergens
Respiratory allergen (or allergens) are microscopic particles in the air and even inhaled in small amounts, can trigger asthma symptoms arriving in the bronchi. The main respiratory allergens are pollen, particles from animals (cats, dogs, rodents, dust mites, cockroaches, etc.) and mold. Can also be the cause latex dust, cereal flours or other vegetable dusts.
Asthma attacks caused by pollen
Some pollen are carried by the wind and are engageable with the respiratory mucosa (nose, bronchus). They contain allergens and can cause allergic seasonal rhinitis (hay fever), conjunctivitis (eye irritation) or asthma. The symptoms appear that pollination period. Pollens are present in the city and in the countryside; their effects are enhanced by pollution and dry, windy weather.
In France, we roughly distinguish three periods of pollen: January to March with the trees (cypress, alder, aspen, birch, oak, sycamore, olive, etc.); spring with Poaceae or grasses (couch grass, orchard grass, timothy, etc.); July to September with other herbaceous (ambrosia, Parietaria, nettles, etc.). These periods may vary by region.
Asthma attacks caused by pets
Allergy pets (cats, dogs, hamsters, guinea pigs, rabbits, birds, etc.) is very common and these animals are often the cause of asthma or worsening of the disease. Direct contact with the animal is not always necessary to trigger asthma attacks. The particles responsible for allergies (allergens) are present in the saliva of the animal, its urine, dead skin debris (dander) and hairs that settle anywhere in the house.
So the cat emerges allergenic particles that persist several months suspended in the air, even in the absence of the animal, especially if the furniture lends (draperies, carpets, rugs, upholstered furniture). The asthma attack is then caused by the inhalation of dust particles carrying these allergens. It may be associated with signs of allergic rhinitis and conjunctivitis.
The majority of people allergic to animals awareness in contact with their own animal. The treatment is mainly based on the distance of the animal. If business in contact with animals, allergy of this type may require professional reclassification.
Intermittent contact with animals can also cause allergy attack. Some pet hair on the clothes of a member of the entourage (family or school) can sometimes be enough to cause an allergy attack or an asthma attack.
Asthma attacks caused by mites
Invisible to the naked eye, mites (microscopic spiders) are mainly present in house dust, in food storage areas and in the flour. They live only about six weeks but reproduce very quickly, especially if the environment lends itself (heat and humidity).
They are particularly fond of bedding (box spring, mattress, pillows, etc.) and curtains, sofas, chairs and upholstered furniture, rugs, carpets and stuffed toys. A mattress can contain two million dust mites and can be found up to 2,000 mites per gram of dust! They feed on dead skin microparticles that our body sows everywhere every day, hair and pet hair.
These are the remains of dead mites and their droppings, which when inhaled, cause allergies. In our climate, mites do not survive when the air is too dry or hot (they are destroyed by washing more than 60 ° C). As early as 1500 meters above sea level, allergy responsible mites are practically absent, because the cold prevents them from proliferating.
Asthma attacks caused by cockroaches
Cockroaches are insects that are responsible for a growing number of respiratory allergies, the main events are rhinitis and asthma attacks.
These insects seek darkness, heat, moisture and food debris. So we find them behind furniture and in the engines of major appliances (washing machine, refrigerator, etc.), in laundries, cellars and above all in the garbage chute. The kitchen is the favorite place of cockroaches. In heavy infestations, some textiles can be contaminated (sofa, mattress, carpet, etc.). Allergenic elements (debris, insect droppings) are carried by dust that asthmatic breathes in the air.
Four to 5% of the population is sensitive to cockroaches and 10 to 20% of asthmatics are allergic to them. This sensitivity is often associated with allergy to dust mites, pollen and pet hair.
Asthma attacks caused by mold
Molds are microscopic fungi that may have a strong allergenic potential. Inside the houses, the most common fungi are Rhizopus, Mucor, Penicillium, Aspergillus and Cladosporium. They thrive in moist environments with visible presence of mold, condensation, water leakage, of a musty smell (showers and bathrooms, basements, rooms have undergone water damage, etc.).
There are more fungal spores if the foundations of the house are of stone, there are cracks in the coating of walls and ceilings or if ventilation is inadequate housing. Excessive insulation habitat without suitable ventilation is a risk factor, as well as the presence of a non-maintained air conditioning system.
The concentration of mold growing in hot, humid weather. They particularly like house dust, paper, wood, air conditioners and humidifiers, and the land of houseplants.
Outside, there are also mold suspended in the air, especially in spring and summer. Alternaria is one of the most common and can be responsible for severe asthma attacks.
Asthma attacks due to respiratory infections
Infections affecting the lungs and bronchi (influenza, viral or bacterial bronchitis or pneumonia), but also those that affect the nose or throat, are often responsible for the onset of asthma attacks in people for whom treatment background had hitherto effective.
Viral infections account for about 60% of the causes of worsening asthma in adults and 80% in children. Sinusitis and dental infection may also worsen asthma.
It is important to note the first signs of infection (fever, unusual cough, sputum, etc.) to your doctor so he can strengthen your asthma maintenance treatment to prevent worsening and possibly begin treatment against respiratory infection.
Asthma attacks due to sports activities
Sport is recommended for asthmatics because it helps develop lung capacity and strengthen the respiratory muscles, such as the diaphragm. However, inhalation of cold, dry air, during exercise or recovery, may be the cause of asthma (exercise-induced asthma). In addition, sports exposing allergens or irritants to avoid: riding if one is allergic to horses or running in the city, the days of high pollution. Asthma attacks are to exercise even more common than asthma is poorly controlled by the treatments.
Asthma attacks due to certain drugs
The so-called drug “beta blockers” can aggravate asthma by promoting the contraction of the bronchi. They are against-indicated in asthmatics. These drugs are used in tablets to treat high blood pressure, tachycardia (when the heart beats too fast at rest) or the consequences of a heart attack, but also drops in the case of glaucoma (pressure of eye).
In some asthmatics are allergic to, antibiotics such as penicillin can trigger an asthma attack. The reaction is usually a skin allergy (redness, pimples, itching, etc.) and sometimes an asthma attack. In general, allergy concerns all of the same family of antibiotics drugs.
Asthmatics also suffer from nasal polyposis, an asthma attack can be triggered by taking aspirin (that is to say all medicines that contain aspirin), or certain anti-inflammatory drugs (NSAID) used to relieve pain (ibuprofen, etc.). In case of pain, it is better to use another medicine recommended by your doctor.
It is important to tell a new doctor that you have asthma and allergies to indicate that you have had in the past with certain medications, so it avoids prescribe drugs from the same family.
Similarly, any asthmatic must communicate his asthma and allergies the doctor if he should benefit from operation under general anesthetic. Some anesthetics can sometimes trigger asthma attacks or allergic reactions. This is also the case of latex (gloves) should not be used in case of allergy to this material.2015-01-08