Causes Of Allergic Rhinitis

Allergen is something that triggers the allergy. When a person is allergic rhinitis, inhaled allergens such as pollen or dust, the body releases chemicals such as histamine. This causes allergy symptoms such as itching, swelling, and mucus production.

Hay fever involves an allergic reaction to pollen. (A similar reaction occurs with allergy to mold, animal dander, dust and similar inhaled allergens).

The pollens that cause hay fever vary from person to person and from region to region. Small, hard to see pollens often cause hay fever. Examples of plants commonly responsible for hay fever include:

Trees (deciduous and evergreen)

Herbs

Ragweed

The amount of pollen in the air can play a role in whether hay fever symptoms develop. Hot, dry and windy weather are more likely to have increased amounts of pollen in the air cool and damp, rainy days when most pollen is washed to the ground.

Some disorders may be associated with allergies. These include eczema and asthma.

Allergies are common. Your genes and environment can make you more susceptible to allergies.

Or are you more likely to develop allergies is often transported to the families. If both parents have allergies, you probably suffer from allergies. The opportunity is greater if the mother has allergies.

Causes Of Cat Allergy

Cat allergen is produced in large quantities, especially by non-neutered male cats that allergen is partially under hormonal control. Dander is constantly airborne, sticky, and found in public places, even where there are cats. This is due to dandruff, worn on the clothing of people who have cats, so the decline in public places. Therefore, cat allergen is a component of household dust, even in households where the cat has ever lived.

The set of cat dander particles is very small, and is inhaled deep into the lungs. Cat dander is therefore a common cause of allergic asthma, and cat owners who are allergic to cats are more prone to developing symptoms of asthma.

Causes Of Tree Pollen Allergy

Of the 50 000 different trees, less than 100 have been shown to cause allergies. Most allergies are specific to a type of wood or a man of cultivation techniques, some trees, such as:

Catalpa

Elm

Hickory

Olive

Pecans

Maple

Walnut.

The female version of these species are completely pollen-free:

Ash

Box Elder

Cottonwood

Date palm

Maple (red)

Maple (silver)

Phoenix Palm

Poplar

Willow.

Some people do not seem to cross-reactions among the trees of alder, beech, birch and oak family and juniper and cedar family.

Causes Of Allergies

Allergy begins when the immune system mistakes harmless substances normally dangerous attackers. The immune system then produces antibodies, which are always on guard for your particular allergen. When you are exposed to the allergen again in the future, these antibodies in the immune system to release chemicals, including histamine, which causes allergic symptoms.

Common triggers of allergy are:

Airborne allergens like pollen, animal dander, dust mites and mold

Some foods, especially peanuts, tree nuts, wheat, soy, fish, shellfish, eggs and milk

Insect bites such as bee stings or wasp stings

Drugs, particularly penicillin or penicillin-based antibiotics

Latex or other substances you touch, which may cause allergic skin reactions

Causes Of Indoor Allergies

Allergic sensitivity is an immune system reaction to an alien "Invader", a substance that is not native to your body. Exposure to the invader, an allergen that triggers the reaction.

When the allergen particles coming to rest in the linings of the eyes, nose and respiratory tract of a vulnerable person may be an allergic reaction occur.

When the immune system has been "sensitized" to a specific invader, it overreacts to the intruder, this overreaction to a harmless substance known as hypersensitivity or allergic reaction.

This reaction sets in motion a series of responses, which culminate in the release of chemicals called "mediators." Histamine is an example of a mediator.

The effects of mediators on cells and tissues that causes allergic symptoms.

Mites

Dust mites are common indoor allergens. Can be found in most homes, usually on the beds and bedding, upholstered furniture, fabric or other material.

Often when people think they are sensitive to dust, are actually sensitive to dust mites and particles of debris and fragments of dead mites can be found in house dust.

Animal dander

For some people, pets trigger allergic reactions. They simply can not be around animals such as dogs, cats, gerbils, hamsters and other fur without developing unpleasant symptoms such as sneezing, stuffy nose, itchy eyes and asthma.

Contrary to what many believe, an allergic reaction to animals is not due to hair.

An allergic reaction is actually caused by substances in animal saliva, urine, and especially the scales.

Dandruff is flakes of dead skin (like dandruff), which detaches from the skin of the animal.

Allergens have become split hairs or skin, urination, or the animal licking or scratching itself, once dry, the allergens are airborne, where they referred to other parts of the house dust.

A variety of small animals, which are popular, because the house pet cause allergic reactions.

Animals such as dogs and cats are more likely to cause allergic reactions.

Birds can also cause reactions, but less often than other animals.

Animals such as fish, reptiles and amphibians rarely cause allergic reactions.

Can trigger an allergic reaction to one of the following:

Directly affect the animals

Being at home with the animal

Being in an area covered with furniture, carpets, bedding, curtains, clothing, bedding or cages of animals, even the counters and walls, where the animal is allergen landed

Being in an area covered with another person whose clothes are allergens

Cleaning pet beds, cages or litter

Touching toys, bedding, towels, or other animal that has touched

Moulds

Molds are a type of fungus that has no stems, leaves and roots.

Mussels usually live outdoors, but you can usually find in almost any indoor environment. They can trigger hay fever and asthma, and reproduce by releasing spores into the air, floating around until they find a hospitable environment.

They pass easily through doors and windows open and move inside, especially when there is excess heat and moisture. To develop and produce mold. Many of us have seen mold growing in the shower.

Mold is not always visible, but can grow in unseen areas of the house, floor materials, such as under and behind the walls.

To grow, mold requires water, which may be liquid water from the leaking pipe or roof, or a pool of condensation on the windows o.

It also requires something to grow, and the mold is not picky, but is expected to grow wood, sheet rock, or fabric.

As it grows, mold release more spores, many of which have become part of house dust.

Although molds can trigger allergic symptoms, like any other allergen, rarely cause serious health problems, except for people who are severely immunocompromised, or chemotherapy.

Cockroaches

Most of us do not want to think of insects in our homes, especially cockroaches, but they are a fact of life. If you live in a crowded urban area, an old multi-family dwelling, or a warm climate, such as the U.S. South, you will almost certainly cockroaches living in your home, even if you can not see them.

Cockroaches like damp places where food is available.

Even if the kitchen is their favorite room, you can find almost anywhere in the house.

When they die, usually not in sight, their bodies are dried and broken. These body parts, and dry waste, become part of house dust.

Causes Of House Dust Mite Allergy

The excretion of mites contain several proteins. When they are inhaled or touch the skin, the body produces antibodies. These antibodies trigger the release of a chemical called histamine, which leads to swelling and irritation of upper respiratory tract - usually symptoms of fever and hay asthma. Predisposition to allergy is often hereditary.

Unlike pollen, dust mites are present all year round causing constant allergy - allergic rhinitis 'perennial'. Secretion mites dries out and can be launched into the air when someone enters into a mat, sitting on a chair, or shakes the bed linen, people in immediate allergic symptoms.

Causes Of Sun Allergy

Allergic reactions occur in the sun's ultraviolet radiation is triggered by changes in skin cells. These changes cause the immune system mistakenly identify the proteins in skin cells as harmful invaders. The immune system then makes antibodies to attack the cells, and this leads to symptoms.

For most people with allergies to the sun, exposing the skin to the sun shining in the spring or summer triggers allergic skin reaction. However, some people may have an allergic reaction during the winter months. In people who have a severe sun allergy, an allergic reaction can even be triggered by the interior lights.

Certain medications, chemicals and medical conditions that can make the skin sensitive to sunlight (photosensitivity). For example, an ingredient in your shampoo or having a disease like lupus can increase photosensitivity. In most cases this is not a true allergic reaction. However, it can cause symptoms similar to those caused by an allergy to the sun - and if you have an allergy to sunlight, which can aggravate your symptoms.

It is not clear why some people have a sun allergy, and others do not. Heritable traits can play a role.

Causes Of Cockroach Allergy

The major allergens of cockroach droppings are called feces. Allergens tend to be heavy, such as mites, and is likely to be in the air with activities such as sweeping or vacuuming. Cockroaches airborne particles entering the mucous membranes of the eyes, nose and lungs, and develop an allergic reaction in people allergic to cockroach antibodies.

Causes Of Nickel Allergy

An allergic reaction is a bit like a case of mistaken identity in the body's immune system. Normally, the immune system reacts to protect your body against bacteria, virus or toxic substances.

If you have a nickel allergy, your body reacts to nickel and possibly other metals such as cobalt and palladium. In other words, it is erroneously found nickel in something that could hurt you. When the body has a reaction, in particular agent (allergen) - in this case, nickel - the immune system is more sensitive to it. This means that when you come into contact with nickel, your immune system to react and cause an allergic reaction.

Your immune system's sensitivity to nickel can develop after your initial exposure or after repeated or prolonged exposure. When you are allergic to nickel, the immune response is generally faster every time you are exposed to the metal.

September nickel allergy is not known, but the sensitivity to nickel can be partly inherited (genetic).

Sources of exposure to nickel

Nickel allergy is most commonly associated with earrings and other jewelry for piercings, which contain nickel. Common sources of nickel exposure include:

Jewelry for piercings

Other jewelry, including rings, bracelets, necklaces and brooches jewelry

Watch Bands

Clothing fasteners such as zippers, snaps and hooks throat

Belt Buckles

Hairpins

Spectacle frames

Coins

Utensils

Paper Clips

Plumas

Buttons

Tools such as hammers and screwdrivers

Dental Fillings

Artificial limbs (prostheses), such as artificial heart valves

Drinking water

Alkaline

Mobile Phones

Nickel is also present in foods such as oatmeal, chocolate, nuts, legumes and nuts. Nickel is also found in canned foods. If you are allergic to nickel, ask your doctor if a diet low in nickel could be useful.

Causes Of Celiac Disease

It is unclear what causes celiac disease, also known as celiac disease, tropical sprue, gluten-sensitive enteropathy not. Doctors know that something is happening in people with celiac disease to make the body's immune system to overreact in response to gluten in the diet.

Normally, the small intestine is filled with small hair-like projections called villi. It resembles the long hair of a plush carpet on a microscopic scale, villi work to absorb vitamins, minerals and other nutrients from the foods you eat. The results of celiac disease damages the villi. No major villi, the inner surface of the small intestine becomes less like a soft carpet and a tile floor, and his body is unable to absorb nutrients necessary for health and growth. Instead, nutrients such as lipids, proteins, vitamins and minerals are eliminated with feces.

Although the exact cause of celiac disease is unknown, doctors found that often runs in families. If someone in your family has been diagnosed with celiac disease, which may have an increased risk of disease. The researchers found that certain genetic mutations appear to increase the risk of celiac disease, but with these mutations does not mean that you are sure you have celiac disease. This means that other risk factors play a role in whether to develop celiac disease.

Causes Of Oral Allergy Syndrome

SV causes symptoms when an affected person eats some fruits, vegetables and nuts. Some people may show that allergy to a particular food, and some may have allergic reactions to many foods.

People allergic to tree pollen may develop the OAS for a variety of foods. As allergy to tree pollen was prepared to grass pollen is not well understood. In addition, some individuals have severe reactions to certain fruits and vegetables that are not in any particular category of allergy. In recent years, it has also become clear that when tropical foods can initiate OAS latex allergy is the underlying cause.

Because the protein allergens associated with the OAS are usually destroyed by cooking, most reactions are caused by eating raw foods. The main exceptions to this rule are the celery and walnuts, which can cause reactions even after cooking.

Causes Of Insect Bites Allergy

Insects usually not attack unless provoked. Most bites and stings are defensive. Insects sting to protect their hives and nests.

A sting or bite injects venom composed of proteins and other substances that can trigger an allergic reaction in the victim. The bite also causes redness and swelling at the injection site.

Bees, wasps, hornets, yellow jackets and fire ants are Hymenoptera family. Bites or stings may cause serious reactions these species in persons who are allergic to them. The death of bee stings is 3-4 times higher than the death of snake bites (for details, see the stings of bees and wasps). Bees, wasps and ants differ in how they cause damage.

When the bee stings, it loses the entire injection apparatus (stinger) and actually in the process dies. WASP can cause multiple stings because it does not lose the injection device after it is injected.

Fire ants inject their venom, using their mandibles (biting parts of the jaw) and rotating their bodies. You can inject venom many times.

Instead of mosquitoes generally do not cause major illnesses, unless they transmit "vectors" or micro-organisms that actually live in these mosquitoes. For example, malaria is caused by an organism spends part of its life cycle of a particular species of mosquitoes. West Nile Virus is another disease spreading mosquitoes.

Other types of biting insects and diseases

Head lice can transmit epidemic relapsing fever caused by spirochetes.

Leishmaniasis, caused by the protozoan Leishmania, is carried by a mosquito.

Sleeping sickness in humans and a group of livestock diseases that are prevalent in Africa, known as nagana, is caused by protozoan trypanosomes transmitted by the bite of the tsetse fly.

In unsanitary conditions, the common housefly can have an occasional role in the proliferation of intestinal infections (such as typhoid fever and amoebic and bacillary dysentery) with contaminated food to humans.

Tularemia can be transmitted by an insect bite deer plague by fleas, and epidemic typhus rickettsiae by fleas.

Mosquitoes transmit several viral diseases (such as equine encephalitis, dengue and yellow fever in humans and other animals).

Ticks can transmit Lyme disease and other diseases through their bites or stings.

Other insects such as chiggers and mites typically cause self-limited local swelling and itching.

Severe bites of spiders not insects, may be the black widow or brown recluse.

Causes Of Bee Stings Allergy

Bee sting venom contains proteins that affect the skin cells and the immune system, causing pain and swelling around the bite area. In people with bee sting allergy, bee venom can cause a poor immune system.

Causes Of Corn Allergy

Allergic reactions can occur due to eating corn both raw and cooked. Those suffering from allergies but can also react to corn pollen (usually with allergic rhinitis and / or asthma) to grass pollen and corn starch. As with other food allergies is to avoid foods of corn and corn related, the main way to prevent future reactions.

Causes Of Latex Allergy

In a latex allergy, your immune system identifies latex as a harmful substance. Your immune system activates certain cells to produce immunoglobulin E (IgE) against the latex component (the allergen). The next time you come into contact with latex, IgE antibodies that sense and signal your immune system to release histamine and other chemicals in the blood. The more exposure you have, the immune system can respond to latex (consciousness).

These chemicals cause a wide range of signs and symptoms of allergy. Histamine is partly responsible for most allergic responses.

Latex sensitivity may occur in several ways:

Direct contact. The most common cause of latex allergy is direct contact with latex, as latex gloves or touching other products containing latex.

Inhalation. You can develop a latex allergy by inhaling latex particles. Latex products, especially gloves, discount latex particles, which can become airborne. Cornstarch is sometimes used in gloves to make them easier to apply and remove. The cornstarch absorbs latex proteins, but when the gloves are off during application or removal, the latex particles responsible for flying through the air. The amount of air latex gloves is highly variable depending on the brand of gloves used.

A true latex allergy, hypersensitivity reaction known as the immune system, occurs when the immune system reacts to proteins found in natural rubber latex. Signs and symptoms develop soon after exposure.

But it is also possible to have different reactions to latex, which is not always an allergy to latex itself. They include:

Allergic Contact Dermatitis. This is a reaction to the chemical additives used during the manufacturing process. Signs and symptoms - usually a rash similar to poison ivy, including light bulbs - the development of 24 to 48 hours after contact.

Irritant contact dermatitis. It is not an allergy, this form of dermatitis is more likely that irritation, wear rubber gloves or exposure to dust inside. Symptoms include dry, itchy, irritated areas, usually on the hands.

Types of latex

Manufacturers produce two types of products from natural latex sources:

Hard rubber. This type of latex in products such as athletic shoes, tires and rubber bullets. Hard rubber does not cause allergies in most people.

Latex dipped. The latex of this type is found in some products that are extensible, such as rubber gloves, balloons and condoms. Most allergic reactions to latex products are produced with latex dipped, as they often are used directly on skin.

Other rubber products. Rarely, some people who are sensitive to latex may also react to other rubber products, including erasers, rubber parts of toys, rubber bands, rubber in medical devices and rubber in the elastic in clothing.

Not all products are made from natural latex. Products include human (synthetic) latex, such as latex paint, are unlikely to cause reactions, because they contain a natural substance.

Latex-containing products

Thousands of consumer products contain latex, rubber, and many have found a home. A common latex products are:

Dishwashing gloves

Carpet

Belts on clothes

Balloons

Rubber toys

Hot water bottles

Teats

Disposable diapers

Sanitary napkins

Rubber bands

Gum

Condoms

Membranes

Goggles

Racket handle

Riding motorcycles and bicycles

Latex products are also available in health care facilities. But because the problem of latex allergy, many health care facilities latex-free gloves. Other medical products that may contain latex or rubber are:

Blood pressure cuffs

Stethoscopes

IV tube

Syringes

Respirators

The electrodes

Surgical masks

Causes Of Alcohol Allergy

Alcohol intolerance occurs when your body does not have the right enzymes to break down (metabolize) the toxins in alcohol. This is caused by hereditary traits (genetic).

Intolerance reactions can also be caused by a variety of other ingredients commonly found in alcoholic beverages, especially beer or wine. These include:

Sulphur dioxide or other preservatives

Chemicals, cereals or other ingredients

Histamine, a product of fermentation or brewing

In some cases, reactions can be caused by an allergy to a grain of corn, wheat or rye or any other substances in alcoholic beverages.

Rarely, the pain of alcohol is a sign of a more serious underlying, such as Hodgkin's lymphoma (Hodgkin's disease).

Causes Of Grass Allergy

The most common allergen, or substance that causes or is triggered by grass pollen allergy. Pollen particles are very small and small facilities ovulation owned plants.

During his primary education and even in their biology classes before knowing the word of pollen on issues related to growth or reproduction of flowering plants.

Please note that the pollen is so small and light that fits in a small butterflies in the legs. Pollens are most of the flight time, or are carried in the air, especially during the summer and spring, when trees, flowers, and above all, grasses pollinate.

Because the pollen is so light weight and if they are in the air, people can inhale. Inhalation of pollen can cause or trigger adverse reactions to the person.

Causes Of Scorpion Allergy

Scorpions are arthropods - a relative of insects, spiders and crustaceans - and have changed little over the last 400 million years.

The scorpion is on average about 3 inches (7.6 cm), but different species can be much smaller or larger. At 8 inches (20 cm), the African scorpion is probably the longest in the world. Scorpions are eight feet and a pair of pliers as crabs, giving them a hard stare. The poison is carried in a gland behind him, and when there is an attack, a scorpion sting can be turned to the past at the speed of light. The same poison is a complex mixture of toxic substances that affect the nervous system (neurotoxins).

Many people think that scorpions dangerous pests, but they play an essential role in the ecosystem, which consume large amounts of other arthropods and even small snakes and mice. They are shy and nocturnal creatures that resist crushing unless provoked or attacked. They can control the amount of venom release - depending on how they feel threatened - so some bites can be almost entirely venomless.

Causes Of Mosquito Bites Allergy

Mosquito bites are caused by the bite of a female mosquito. The female mosquito feeds on blood by piercing the skin with his mouth (proboscis). While sucking blood, she also deposited some of his saliva into your skin. The saliva contains proteins that remain in your skin. Your immune system may react to these proteins, resulting in the characteristic itching and bumps.

Causes Of Pet Allergy

Allergies occur when your immune system reacts to a foreign substance such as pollen, bee venom or animal dander.

Your immune system produces proteins called antibodies. These antibodies protect against unwanted invaders that can make you sick or cause infection. When you have allergies, your immune system produces antibodies that identify your particular allergen as something harmful, even if it is not. When you breathe in the allergen, or come into contact with it, your immune system overreacts and produces an inflammatory reaction in your nose or lungs. Prolonged exposure to the allergen or regularly can cause ongoing (chronic) inflammation associated with asthma.

Cats and dogs

Cat and dog allergens are found in the skin cells shed animal (dander), saliva and hair. Scales is a particular problem because it is very small and can remain airborne for long periods of time with minimal air movement. It also includes upholstered furniture and easily attaches to clothing.

Animal saliva can stick to carpets, bedding, furniture and clothing. Dried saliva can become airborne.

A hypoallergenic dog named skins can take less than a shedding dog but no dog breed is truly hypoallergenic.

Rodents and rabbits

Rodents include mice, gerbils, hamsters and guinea Guinea. Allergens of rodents is normally present in hair, dander, saliva and urine. Dust bedding or sawdust in the bottom cages can contribute to airborne allergens by rodents.

Rabbit allergens are present in dander, hair and saliva.

Other animals

Pet allergy is rarely caused by hairless animals such as fish and reptiles.