In common usage, an allergy is an adverse reaction toward what is called an allergen, or specifically, the material that causes the allergic reaction.

What Happens When You Come In Contact With An Allergen?

When you ingest something that causes an allergic reaction in your body, the immune system is said to be hyperactive to this material, and with that, the immune system activates to quash what it sees as a threat. But it's actually not, and is quite harmless and garners no excess bodily reaction in other people.

Once the body's immune system releases antibodies as a response to the allergen, it causes the release of histamine into the bloodstream, which is what causes you to get teary-eyed and have a runny nose or whatnot.

Common Allergens In People

Probably the most common source of allergic reactions in most people is in their food. Whether its shellfish, or mushrooms, or even something mundane like a vegetable, allergic reactions from food are quite common.

And if you've been stung by an insect and notice excessive swelling from the locality of the bite, then you've got an allergic reaction from that bite.

There are even cases of extreme allergic reactions to bee stings, resulting in anaphylactic reactions. Chemicals and medicine also fall into the category of being a common source of allergic reactions.

If you've got to have antibiotics as prescribed by the doctor, make sure that your body doesn't have an allergy to materials in your medicine.

Treatment and avoidance of allergies

Should you suspect that you're having an allergic reaction to something, consult your doctor so that he or she can refer you to an allergist, which is a type of specialization for doctors in the field of allergies.

He or she can do the testing on your suspected materials and verify your suspicions and prescribe medicines or give your advice on what to do about your reaction. But sometimes, antihistamines are not enough, though that's the most common medicine to combat allergic reactions.

Sometimes you have to avoid contact with the allergen at all costs, as enough exposure could possibly lead to disastrous results in your body.

Make sure you know exactly what materials you are allergic to so that you can avoid even trace quantities of it in other things.

Avoidance is also a good method of preventive treatment, since you won't have allergic reactions when you aren't exposed to allergens.

One method of treating allergens is to give a person immunotherapy, exposing the person with the allergy to minute quantities of his or her allergen.

The immune system learns to cope with these materials, developing immunity and preventing future allergic reactions. This is particularly effective for airborne particles, less so for food allergies, which might cause reactions even though you've undergone treatment.

Almost all people have allergies of one sort to another, and it varies widely when it comes to what they're allergic to. Once you find out your allergen, you can avoid it and prevent unpleasant reactions from your body, or even get treatment so that you can develop immunity and remove the allergic reaction from your body.
How Allergies Affects The Human Body

But one thing that is often overlooked is the human eye, since it too contracts allergic reactions quite easily. There are often symptoms that can let you know that you're having an allergic reaction to a substance, identifying whether it's from an allergy or something else that's causing your eye irritation.

Signs Of Trouble In Your Eyes

A lot of common symptoms can be associated with multiple diseases. Itchiness in the eyes, redness, swelling, a burning sensation, it can all possibly be part of some other disease.

Another common sign is known as pink eye, which has the entire clear membrane of the white of your eyes going pink, and possibly getting itchy as well. You can find out the source of the irritation if it's from a viral, bacterial, or allergic source.

If it only affects one eye, then the most likely cause is viral. A bacterial source of pink eye will also show because there is often a discharge coming out of the eye. However, if it's not exclusively the eye that's affected, then the source will most likely be allergic in nature.

The doctor will most likely rule out all other possibilities once he or she finds out about the exact circumstances of the irritation.

Sources Of Eye Allergies

The eye, although protected from the outside by its lubrication, can still sometimes come into contact with possible allergens. The usual culprits in eye allergies include pollen, which occurs during the spring and summer months at its peak.

An unpleasant reaction to chemicals that enter your eye such as medication with side effects or eye drops can also cause an allergic reaction. Also quite common is having allergies associated with pets, so be sure to check these sources.

What you can do

Of course, being an allergic reaction, the best thing that you can do to avoid having an unpleasant reaction to your allergen is to avoid it. You'll have to make sure that you keep your surroundings clean from most airborne allergens, like vacuuming regularly around your house to keep dust, pollen, and pet hair from getting airborne and into your eyes.

But still, you can't avoid being exposed to other environments, so if you're allergic to airborne particles, you'll have to check with your doctor to see if you can benefit from using over the counter medicines that you can carry around.

These can possibly alleviate the symptoms you have through their active ingredients. You can also probably find products that have antihistamines in them, lessening the allergic reaction and calming down things a bit when symptoms manifest themselves as swelling and redness.

A direct application to the symptom site will have a faster reaction time than if you were to take the medicine in oral form like capsules or tablets.

However, consult your doctor on the effects of prolonged use of your medicinal treatments, as your eyes might become dependent on your medication. You don't want to have your blood vessels being dependent on eye drops to become small again when they swell up during an allergy attack.

How The Body Reacts To Allergens In Food

How much the body will react when exposed to a food allergen ranges from mild irritation to anaphylaxis, which has the whole body reacting to the allergen and even possibly causing death.

Depending on the severity of your allergy, reaction to food allergens can occur from a few hours to even just a few seconds after ingestion of the food containing the allergen.

In some types of reactions, it may be that there is just some mild tissue swelling, being itchy and irritating at the most. Of course, the swelling varies, so it can also cause obstruction in the air tract and causing difficulty breathing.

Common Food Allergens

At over ninety percent of all causes of allergic reactions, the most common food allergens have the bulk of the attention given to food allergies.

They are divided into eight materials, and individually they are common enough that a person having an allergic reaction to these food materials better stay away from them to avoid having to undergo treatment.

Being allergic to milk is pretty common, and so are peanuts, eggs, soy, and wheat to name some. These are found in everyday food products that a person allergic to them will have to pay careful attention to what he or she is eating to avoid having an allergic reaction.

Seafood and shellfish are also quite common, though of course, it's easier to spot these among the many food products out in everyday surroundings.

Diagnosis, Testing, And Treatment

If you suspect that you're allergic to a certain food product, it would be best to consult an expert allergist. Your physician will be able to guide you in this area, and recommend someone you can go to. They can conduct tests to see what kind of material you're allergic to.

One common testing method is the skin prick test to see if a person is allergic from the media being exposed below the skin. Another would be the blood test diagnosis for another type of allergen.

The final test type would be to have a blindfold test to see if the patient is allergic to the actual allergen or a placebo. This is usually conducted in the hospital setting where patients may be treated quickly if their reaction becomes severe.

Once a patient has been identified as having an allergic reaction to food products, several treatment options can be taken at this point.

There is no cure if you're allergic to a certain food protein, and most doctors agree that injections or allergy shots don't work for food allergies.

The surest method for treatment of food allergies is avoidance, and with this you'll just have to learn which food your allergen is present in, and avoid it.

For accidental ingestions, epinephrine can be given to stabilize the patient's system. Before you find yourself in this situation though, it would be best to make sure that you know just what to do before a severe reaction occurs.

Should you be affected by any specific allergies, you will likely find out because of several symptoms. But sometimes you can confuse other symptoms for just some common diseases like colds.

There are some distinctions though, between allergy symptoms and other diseases. Subtle differences in conditions could let you identify if what you're having is just a simple case of the colds or an asthma attack or if it's really allergies.

Between Colds And Allergies

The cold is probably the first thing you'd blame if you don't suspect that the sneezing, having a runny nose and being teary-eyed is caused by an allergic reaction to a substance. But this is easy enough to identify, since colds occur mainly during the colder months of the year.

You should also check if you have allergic rhinitis, which would manifest itself in ways quite similar to colds. Some other allergies caused by airborne particles that your body is allergic to can cause asthma-like reactions, like coughing, wheezing, and having trouble breathing because the air tract is clogged up significantly.

What you can do to distinguish between colds and allergies

At some point you'll be able to notice an underlying trend when it comes to the occasions in which symptoms occur. Then you'll be able to test out your suspicions, and consult an allergist to confirm if you're indeed allergic to a given substance.

The allergist can conduct tests on you so that you'll be able to confirm with your doctor what substances you're allergic to. Once you've nailed it down, you'll be able to get some firm advice on what to do to prevent or treat your allergies with, whether it's antihistamines of some other form of treatment like immunotherapy for allergies.

Avoidance Is Key

No matter what the treatment being prescribed is, you'll always be able to prevent occurrences of allergy attacks if you avoid the allergen material as much as possible.

For example, in food allergies, if you're allergic to shellfish or shrimp, it would be wise to steer clear of any dishes that contain this as an ingredient.

No matter what you do, if you aren't exposed to allergy-causing media, then you won't have an allergic reaction. If you still are having allergy symptoms, then check again with your doctor, you might have other materials that you're allergic to.

You'll probably have to have additional tests done, but still it's better than having no idea what other materials you're allergic to.

There are some other treatment options when it comes to allergies, such as having shots for immunotherapy.

In this scenario a doctor will give the patient a minute quantity of the allergen in question so that exposure is controlled and the subject's immune system can slowly work its way around the allergen and develop immunity, reducing or totally eliminating allergic reactions to the substance.

This procedure is spread out over a period of time, but the results are worth it when you think about not having to sneeze or cough or have any other unpleasant effects of being exposed to allergens.

The immune system then releases immunoglobin E, otherwise known as IgE into the bloodstream, triggering a chain of events that release histamines in the body to attempt to combat the foreign particle. A skin rash, runny eyes, sneezing, whatever the manifestations, they still have the same first steps.

Baby Food Allergies

A baby will typically have an adverse reaction toward a food product, and one can often easily see what these reactions are.

An example of an intolerant reaction to a food product would be from lactose intolerance, where people who are intolerant cannot break down the sugar in dairy products.

Spotting Trouble Signs

A potentially dangerous allergy in infants can be seen because of the reactions from the food being eaten. A common example would be an infant having loose bowels after eating, and may even vomit the food in an effort to expel it from the body.

The throat may also close up or the lips and face may swell up. On the infant's skin, rashes or hives may appear, among other unusual occurrences in the skin surface.

An intolerance is different than an allergy, and usually has more to do with intestinal trouble than reaction to any particular allergen.

How to avoid allergy troubles

When introducing a new food product to your infant, be sure to try only minute quantities at first so that you can see if there are any unpleasant reactions to the food, and afterwards you can slowly increase the amount you are feeding when there are no apparent reactions.

During the course of introducing new food to your child, you should be able to see as well if your child likes it. If there are no negative reactions present, then you can safely increase the quantity given to a normal level.

The timing of introducing new foods should also be considered, and you'll want to feed your child with new food early in the day so that you still have ample time to take your child to the pediatrician during clinic hours and disrupt your baby's daily routine the least.

Ninety percent of all allergic reactions come from just eight food sources, and they are common enough to be found in foods everywhere.

These are the kind of food products that you'll want to check up on for your child, just to make sure that there is no reaction whatsoever.

Milk is one of the most common, and you should check with dairy products should there be an adverse reaction.

Eggs are the second on the list of allergen foods.

Peanuts and tree nuts are some common allergens right up to adulthood, and they'll have to manage these allergies all their life.

Fish and shellfish allergies can be outgrown, however. Soy and wheat are the last two materials that round out the list, and children can often outgrow these allergies as well

Having an allergic reaction is somewhat a bit of a bother, but with proper management, avoidance, or treatment, your child can outgrow these allergies, or manage to live with it at the very least.

Consult with your family physician when you aren't sure of whether your child is allergic or not.

Breastfeeding lowers the risk of the child developing a milk allergy. In many cases however, the allergy is said to be genetic. Normally, by the time a child reaches the age of three to five years old, the allergy goes away all on its own.

People who have milk allergies should really pay good attention to what they are eating because a lot of foods nowadays are made up of milk and other milk products. A milk allergy is different from lactose intolerance and without extra caution, a milk allergy may turn into a severe illness due to direct contact with foods that cause it.

Milk Allergy And The Immune System

A person who has a milk allergy reacts to the proteins in the milk. The substance known as Curd which forms the chunks that can be observed in sour milk contains 80% of the milk's proteins while Whey which is the watery part holds 20% of the milk's content.

If a person who has allergic reactions to milk eats food that contain milk products, the immune system will fight the milk proteins because it mistakenly sees them as invaders thus harmful to the body. The immune system protects the body from these milk proteins by creating antibodies known as immunoglobulin that trigger the release of chemicals into the body such as histamine.

The release of these chemicals affect the different parts of the body such as the gastrointestinal tract, the skin, the respiratory system and the cardiovascular system which then causes the allergy symptoms like nausea, headache, wheezing, itchy hives and stomachache.

The Common Symptoms

Just like any other food allergy reactions, the symptoms occur within ten minutes to a couple of hours after eating the food that caused the allergy. The symptoms may sometimes last for less than a day affecting any of these three body systems: the skin, the gastrointestinal tract and the respiratory tract.

Milk allergy manifests in the skin in a form of red rashes, redness and swelling in the areas of the mouth or eczema. The gastrointestinal tract on the other hand is affected in the form of belly cramps, nausea, vomiting and diarrhea. The respiratory tract has symptoms ranging from itchy and watery eyes, runny nose and sneezing to asthma attacks coupled with wheezing and coughing.

A severe reaction known as anaphylaxis may also occur to some patients. It causes the swelling of the mouth as well as the throat and airways that lead to the lungs leading to the inability of the patient to breathe. There is also a dangerous drop in the blood pressure which cause the dizziness and passing out and sometimes immediately lead to shock.

Going To The Doctor

Once your doctor suspects that you might be having a milk allergy, you will be referred to a specialist that is equipped to better treat your allergic reactions. The allergy specialist will then ask you some questions that may cover information about how often these reactions occur and the time that it usually takes before the allergy manifests itself in your system. He or she will also ask you if there are members of your family who has the same case of allergic reactions that you have.

An allergy specialist performs a skin test on you and this test will involve a placing of liquid extracts of milk protein on the patient's forearm or back. The skin will be pricked a bit and the allergist waits if there would appear reddish spot forms thus indicating the allergic reaction.

But, if these reactions only happen during specific periods of the year, then you have a seasonal allergy, usually caused by pollen grains being spread out in the air at about the same time as your allergies.

There are also perennial allergies that can happen no matter what day of the year. But the good part is that you and your doctor can work out a treatment for you that will minimize the occurrences and keep your allergy in check.

Nasal Allergy Manifestations

A nasal allergy reaction is a bit like getting a sudden bout of the colds. You'll sneeze, have watery eyes, have a runny nose with a clear liquid discharge, and all the other unpleasant side effects coming in with colds like having a sore throat and cough. This may seem like just an irritation, but there's more to your nasal allergies than just that.

Common Causes

All allergy attacks are triggered by an allergen, which is the substance that your body recognizes as an outside threat and will attempt to block it. A common allergen during the summer months when flowers are in bloom is pollen, which can float around in the air and end up entering your respiratory tract.

Mold also does the same thing, so you can really feel like you're having a mix of irritants, which is probably also the case. The last common sources of nasal allergies are animals, whether it's from dust mites or pet dander from your dog. These can all trigger allergic reactions from your body.

Diagnosis of Allergies

A simple evaluation by your doctor of your nasal symptoms can define the best way on how to diagnose if you have a nasal allergy. Then you can undergo tests to determine the best method of treatment for your case.

It would also be very helpful to your doctor if you provide some medical background and history on your allergies, such as when it started, which periods of the year it occurs, and heredity factors.

A physical exam could also test your body parts for faults. Once it's all finished, you and your doctor can plan a way on how to treat your allergies with medication, allergen avoidance, and possibly immunotherapy so that you won't have to endure those allergies forever.

The most effective treatment of allergies, however, is to avoid being exposed to it as much as possible. If you're allergic to pollen grains, then it might be a good idea to limit your time in parks during the summer, where there are lots of trees and other plants who spread pollen quite well.

Depending on the medical advice your doctor gives, you just have to follow it to make sure that your nasal allergies are minimized and possibly avoided entirely.

Animals are also good sources of nasal infection, so keep your surroundings clean of pet hair and other materials by cleaning and vacuuming often.

You won't have to do so many complicated things just to avoid a simple allergen material, and common sense still applies. Wherever your allergen is bound to be grown or found, better keep yourself away from it.

At the middle of the list is peanut allergy, which is something quite troubling because some everyday dishes have peanuts among their ingredients, along with other household products containing peanut powders or extracts.

Being allergic to peanuts often manifests early in life, but while most allergies are outgrown as children grow up and get used to the food proteins in other allergen types, peanut allergies are often carried until adulthood. You can also find reactions to peanuts from mild up to having an anaphylactic reaction, which can possibly be life-threatening.

Symptoms of Peanut Allergies

Within minutes, a manifestation of peanut allergies will begin to appear, whether coming from stomach pain along with vomiting or diarrhea, or skin rashes and hives breaking out on the skin, you can really feel when you've become exposed to hazardous material when you have a peanut allergy.

It's bad enough when you have to deal with those things when you get exposed to peanuts, but it can possibly be lethal when you factor in anaphylaxis, and your air tract will close up, you'll have difficulty breathing and possible have to deal with shock and dizziness.

Peanut Allergy Triggers

In an allergic reaction to peanuts, the body will recognize peanuts as a threat, and signal the body to produce histamines which will trigger the allergic response in the body.

Three methods of exposure are possible when it comes to peanut infection. The first would be direct contact with the material in question, like eating food containing peanuts for example. Even just touching could possibly trigger an allergic reaction.

The second would be a cross-contact with peanuts wherein a product without peanut content will accidentally mix in peanut powder or proteins in it. The third would be contact through airborne peanut materials, like inhaling peanuts in a powder form. Another common route would be from aerosols with peanuts in it.

Things You Can Do When Peanut Allergies Occur

Your family doctor will be able to see if your symptoms are allergy-related or through some other cause. As much as possible, you'll want to see your doctor while the symptoms are still manifest on your skin or body.

A skin prick test from your local allergist will confirm if you really do have an allergy to peanuts, and the test will isolate the area of your skin where you come into contact with the peanut allergen. Blood tests can also be done during this time to see how your immune system reacts with peanut proteins.

Unfortunately, there is no one-size solution to solve peanut allergies, apart from avoiding the material entirely. If you have mild reactions to your peanut allergy, there still might be some possibility that your reaction can become severe at one time so you'll need to prepare for that eventuality.

Living with peanut allergies can be done however, and you can discuss options with your doctor for your particular case, and get whatever treatment and screening tests are appropriate for your allergies. You'd also be better off knowing exactly what to do when a reaction occurs.

Sometimes you have to concentrate so much on that that you sort of forget what's the reason behind the itching, which would really be the thing you should focus your attention on, so that it won't happen again.

Allergies are most often the cause of skin rashes and such, and some of them are quite common. Read on to find out what they are and what you can do to avoid them.

Diagnosing Skin Allergies

An allergist can test if you're allergic to substances or if your skin reacts to different possible allergens by conducting a skin test. In a multiple-test method, the allergist will prick your skin to introduce various media in microscopic amounts, to see which pricks elicit a reaction from your skin.

The material type that your skin reacts on can be retested using different methods to confirm if the material in question is indeed your allergen. The allergist can also check to see how severe the reaction to your allergen is, and can range from mild to life threatening, using increasing concentrations of the allergen to measure reaction times.

Types Of Manifestation

Different forms of skin allergy reactions can be found in people. Occurring most often in small children, eczema, specifically known as Atopic Dermatitis, appears in the form of a red rash, and blistering of the skin is quite common. The skin can break from being scratched aggressively, and will usually cause scarring.

Treatment usually consists of applying a topical solution on the site of the rashes to ease the itching, and your doctor will be able to prescribe treatment that is calibrated in strength to match your rashes.

Another common manifestation of skin allergies is the raised, red-colored bumps on the skin known as hives. While it is quite aesthetically disturbing to some, hives are not so itchy that you'll break the skin by scratching really hard. Hives are common enough that people of all ages are affected by it at one point or another.

A third form of allergic reaction is called contact dermatitis, and this is a common reaction to a substance which will cause a similar reaction to a rash when you come into contact with it.

The symptoms have more in common with Atopic Dermatitis, but the usual areas that the rash manifests itself are only where you've touched or come into contact with the substance. A good example of this is when you've touched poison ivy, and there are even common cases of people getting rashes because of their jewelry.

What To Do

Once a rash breaks out on your skin, as much as possible, try not to scratch it, since scratching could break the skin and introduce dirt and bacteria to below the skin level and you'll have more trouble if it gets infected.

A common solution to allergic rashes would be to apply an allergy cream to soothe the inflammation and to remove the itchiness. But the most important thing is that in the first occurrence, you'd be better off consulting your doctor on what to do just to make sure.

Like any other allergy, contact with this food protein type will result in the immune system falsely recognizing the protein as a threat, and will activate its systems in an attempt to combat it.

These ordeals are often painful, and it's no joke when an allergic reaction occurs. Millions suffer from the same condition, and because of this there have been exclusion diets built up so that those allergic to Soy can avoid any and all food products containing the offending material.

How The Body Reacts

The bodily reaction of those allergic to soy may go from mild to wild, depending on their individual case. At the extreme end of soy allergy reactions, and all other allergies for that matter are anaphylactic reactions, resulting in difficulty breathing, shock, and low blood pressure, all quite able to be life-threatening in a matter of minutes.

A common way to combat this extreme body reaction is to inject epinephrine and an antihistamine into the body to stabilize all systems. A medical professional should also watch over victims of allergic reactions during this time just to make sure the reaction doesn't turn fatal.

Common Soy Sources In Food

It's quite scary to think about when you have Soy allergies, but most of the major fast-food chains use soy protein when making bread products like hamburger buns. Canned goods might also contain the same ingredients, so check before you buy the canned product.

Asian-cuisine restaurants will also usually have soy in their basic ingredients, so even before ordering, you'll have to ask if any soy is present in their offerings so you can see which ones you should avoid.

Even food additives are not exempt from soy ingredients, as some chicken broth products may contain elements of soy. Flavoring, including buillon cubes, might also contain soy, so when you're shopping around, it's a good idea to take a look at the ingredients to check for soy.

How Much Soy Is Present Before The Body Reacts

Soy is typically more benign than most other forms of food allergies. In fact, dosages for soy to elicit reaction from the body's immune system are much higher than it would be for other types of food allergens, which often require just a few mg to get an adverse reaction from the body.

That is good for those allergic to soy, meaning that if quantities in their food products containing soy are miniscule in proportion to the whole product, then they might not have to worry about eating it at all.

Having an allergic reaction to soy need not be such a pain in the neck. Consult with your physician to see what he or she can recommend to you when it comes to diet modification, treatment, or immunotherapy to make sure that you won't have unpleasant reactions when you accidentally consume soy products. It all depends on the individual case so you should have your doctor come up with a treatment tailored for your case, making your life easier than having to watch out for soy all the time in everything you eat.