Food allergy is actually an abnormal response triggered by the immune system to food as if it is threatening. Food intolerance looks similar to food allergies. However, the difference lies in how each one of them affects an individual. Food allergy is extremely intrinsic and to an extent, affects the internal organs. 

On the other hand, food intolerance is less severe, mostly just affects the digestive system due to the inability to digest that particular food properly, leading to an upset stomach. Most of the people suffer from food intolerance only, but they confuse it with food allergy.

About ninety percent of all cases of food allergy are related to only eight types of food as per research statistics. These are milk, tree nuts, egg, peanut, soy, wheat, shellfish, and fish.

The Reaction:\

In order to understand how symptoms manifest, it is of utmost importance, in this case, to understand how an allergic reaction to food occurs. An allergic reaction is a bi-step process as discussed further.

Step1: On exposure to the food allergen for the first time, the body reacts abnormally and produces IgE antibodies against the perceived allergen. These circulate throughout the entire body with blood and attach themselves to basophils (found in blood) and mast cells (found in sites like the nose, lungs, throat, gastrointestinal tract, skin, etc.).

Step 2: The next time the body is exposed to a particular food allergen, it gets alert and alarms the tissue that releases histamine in large quantity. Depending on the site of release, allergy symptoms are caused, ranging from mild to severe to potentially life-threatening (for example, in anaphylaxis).

The time span for an allergic reaction manifesting into symptoms can vary between a few minutes to several hours post exposure to the food allergen. The site of mast cells for release of histamine greatly affects the location and timing of the reaction.

Who is at Higher Risk?

If a person has a family history of developing a food allergy, it creates even greater chances for him/ her to have the same or similar reactions. If both the parents have some kind of allergic reaction to food, it is very likely that the child would have that too.

Symptoms:

Symptoms of food allergies largely depend on the sites of mast cells that release histamines. It is possible that these sites are located in nose, ears, or throat leading to itching in mouth, having a trouble in swallowing and breathing, and swelling of lips and tongue. If the location is in the gastrointestinal tract, it may lead to vomiting, diarrhoea, and abdominal pain. If it is in the skin, it might lead to hives, itching, decolourization, pigmentation, worsened eczema, etc.

Cross Reactivity:

If a person has an allergy to a particular food, it is advisable to abstain from similar types of food. For example, if somebody is allergic to crab, he/ she should abstain from shrimp, crayfish, lobster, etc. too as they might also trigger the reaction. This is called cross reactivity.

Treatment:

It is always advisable to abstain from foods which cause an allergic reaction in an individual. However, in case it has already occurred, there are two major types of medication which help in relieving the symptoms. Antihistamines are used for treating mild to chronic reaction, whereas adrenalines are used for severe reaction like in anaphylaxis.

Take Away:

Food allergy is usually a condition for life and cannot be permanently treated. However, symptoms can be relieved. Therefore, it is advisable to avoid the allergy, causing group of food.

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What is allergic rhinitis?

Allergic rhinitis is defined as allergic symptoms in the nasal passage. Allergic rhinitis can be seasonal (occurring during specific seasons) or perennial (occurring year round). The allergens that most commonly cause seasonal allergic rhinitis include pollens from trees,grasses and weeds, as well as spores from fungi and moulds. The allergens that most commonly cause perennial allergic rhinitis are house dust mites, cockroaches,animal dander,and fungi or moulds. Perennial allergic rhinitis tends to be more difficult to treat.

How does allergic rhinitis occur ?

This condition occurs when allergens (allergy- causing substances) come into contact with the nose, and usually also the ears, sinuses, and the throat. When allergens come in contact with the lining of the nose and sinuses, they trigger the cells to release the chemical histamine, which causes the allergy symptoms described below.

What are the symptoms ?

Nasal congestion 
Sneezing 
Watery " runny nose" 
Itchy eyes,nose,or throat 
Puffy eyes or 'allergic shiners'
Post nasal drip 
Tears 
These symptoms may occur during a certain season or year long. They can occur at any age. 

What is the treatment for allergic rhinitis ? 

A number of medications ,including antihistamines, intranasal corticosteroids, and decongestants are available to control symptoms. Allergen immunotherapy could provide long lasting benefit. You can "train" your immune system not to react exaggerated to an allergen anymore.

Allergic Rhinitis - Signs That You are Suffering from it?

Silicosis is a lung disorder that develops as a result of exposure to dust, which has silica (chemical compounds) content. Silicosis significantly makes you prone to other serious health disorders. It is an incurable disorder and a prescribed dosage of medications in the form of cough syrups or antibiotics can help in the regulation of the symptoms. Inhalers are also useful to clear the blocked air passages. In extreme cases, the doctors might suggest a transplant of the lung to eradicate silicosis.

Causes
Silicosis is caused primarily due to a long- term exposure (usually 5-15 years) to silica. But a short-term exposure (for a few weeks or months) can also result in silicosis, which tends to worsen considerably as time progresses, if not diagnosed in its early stages. Silica is a natural dust particle, which is found in abundance in rocks, sand, bricks or concrete. Once silica gets into your body through inhalation, these particles tend to damage the tissues of the lungs by inflicting minor incisions. This considerably disfigures the lungs, thereby making the whole process of breathing rather troublesome. Long-term exposure to silica might further lead to lung cancer. People who work in mines, glass or asphalt manufacturing industries, iron and steel industries and construction sites are at increased risks of developing this condition.

Symptoms
The Symptoms of Silicosis begin mildly, but tend to worsen with time. The symptoms of Silicosis are as follows:
a. The initial symptoms include severe weariness, repeated instances of coughing and experiencing trouble while breathing. These symptoms usually recur as time progresses.

b. In the latter stages of silicosis, the symptoms gradually worsen accompanied by severe pain in the chest along with fever, night sweat and sudden loss of body weight.

Silicosis might make you susceptible to other infections related to the respiratory systems such as tuberculosis.

Prevention
In order to prevent Silicosis, you should wear suitable protective gear and a respirator on your face while working in a place which has risks of silica exposure.

Causes and Symptoms of Silicosis

The onset of winter brings with it chilly and dry winds. For some, it s the time to enjoy the chill weather with hot water baths and soothing drinks, and for others it s time to brave the long persistent cold and flu like symptoms which cause sickness and discomfort.

People who are allergic to the winter season can catch a cold on the slightest exposure to cold air. Sometimes, it s difficult to ascertain whether it is cold or an external allergen. In people prone to winter allergies, the allergies are mainly caused due to the allergens present in the environment. Mostly, winter allergies are also caused by the same allergens that are triggered in the summer season. 

Thus, people who have some or the other form of seasonal allergy is likely to suffer from allergies as the season changes.

Pet dander (flakes of skin in an animal's fur or hair) allergies are believed to escalate in winter since pets are mostly indoors during this season. The best way to deal with this is keeping the pet s area clean and dry, washing and changing of the bedding regularly, and avoiding physical contact as much as possible.
Dampness of clothes, blankets and shoes at home can be an allergy trigger for many people. The best way to control this type of allergy is to keep damp clothes and shoes in sun for some time. However, this may not work in many countries with extreme cold climates, which lack sunshine in their environment.
Decaying leaves and other yard waste can cause allergies due to mould and mildew. Mopping and sweeping the floors and garden can help alleviate the problem to some extent.
Dry climate can cause irritation in the nose and throat. It s important to replenish the body with adequate liquids and water rich fruits and veggies. It s important to choose your drinks wisely. Too much tea or coffee can also dehydrate the body. Go for ginger lemon honey infused in warm water for best results.
Allergy symptoms can also be caused due to too much moisture in the environment. It can give rise to a stuffy or runny nose, sneezing and coughing. Thus it s best to avoid sitting in a moist environment for long.
Sinus congestions are also common during the winter season. Steam inhalation and hot showers can help relieve the symptoms and provide relief.
Whether you are allergic to pets, moisture, dampness, dry weather or chilled winds, the thumb rule is twofold to understand what triggers your allergies and to avoid your exposure to those allergens. As we all know, allergies have no cure and they need to be managed. Drugs also help in controlling the allergy symptoms to some extent. However, it s best to prevent them as far as possible. If you are confused about what triggers your allergy, make sure to consult your doctor.

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Your child is fond of nuts and has eaten a chocolate with nuts but shortly after that develops a skin rash and starts to itch. The rash may even spread to the surrounding area. This is an indication of food allergy to nuts.

What happens is simple - the body's immune system recognizes specific proteins in the food as harmful (antigens) and produces antibodies which can combat them. This leads to an allergic reaction which can vary from something as simple as a skin rash to severe breathing issues.
Though any child can develop food allergies, in most cases, there is a strong hereditary linkage. If parents have had a history of allergy to certain foods, then there is a strong likelihood that the child could have that food allergy too.

Some of the common foods that can cause allergies are as follows:
1. Cow's milk
2. Eggs
3. Nuts (peanuts, walnuts, pecans, cashews or hazelnuts)
4. Soy
5. Wheat
6. Fish (salmon, cod and others)
7. Shellfish (lobsters, shrimps and others)
Of these, peanuts, seafood, and milk are the most common food stuffs that lead to allergies.

Because the child is yet to realize that he has eaten something that his system will not readily accept, the allergic reaction can be described in various ways, as below:
1. Scratching or itching on the tongue
2. Change in the voice - can become husky or hoarse
3. Burning of the tongue
4 tingling of the tongue
5. Funny feeling in the mouth
6. Feeling of something stuck in the throat
7. Itchy feeling or bugs in the ears
8. Throat going thick
9. Bump on the back of the tongue

These are some ways that a child can describe his allergic reaction. Some of the mild symptoms of a food allergy are as follows:
1. Hives (red, swollen, itchy areas on the skin)
2. Eczema of the skin (dry, itchy rash)
3. Nasal congestion
4. Sneezing
5. Itching of the tongue and the mouth
6. Nausea or vomiting
7. Stomach pain

Severe symptoms include:
1. Severe swelling of the lips and tongue that can block breathing
2. Inability to swallow
3. Difficulty breathing
4. Turning blue
5. Dropping of pulse
6. Drowsiness

As the parent identifies a similar reaction when eating the same food item, they can suspect allergic reactions and immediately reach out to the doctor. A detailed discussion will help establish the causative agent. Once that is known, then avoiding food allergies is quite easy. In fact, a well-informed child will know that avoiding certain foods is very beneficial. This will improve the quality of life of the child, help avoid missing school due to allergic reactions, and help avoid the child (and the parent) suffering.

How to Know if Your Child Suffers From Food Allergy

While some people look forward to spring and the beautiful flowers that bloom, for others this is a time of extreme discomfort triggered by pollen allergies. Pollen is probably one of the most difficult allergies to fight as it is invisible and is literally present everywhere. Sneezing, coughing, a runny nose, congestion and watery eyes are the most common symptoms of a pollen allergy. However, you can minimise your troubles by following a few simple steps.

Keep an eye on the pollen count: Not every day has the same amount of pollen in the air. Pollen density is also affected by the time of the day. Pollen count refers to the amount of pollen present in the air during a specific time period. You can find out the pollen count of your area online or through a number of apps. Once you know the pollen count. You can plan your day accordingly and step out or stay in.
Plan your time spent outdoors wisely: It isn t always possible to stay indoors even if you know the pollen count is high. However, you can still plan your time so as to not be outdoors at peak pollen times. 5am to 9am are the worst times to step out as this is when most plants pollinate. Hence avoid stepping out during this time. Windy days can also worsen the situation by spreading pollen around. If you must go for a jog early morning, avoid thoroughfares and gardens and instead pick a route around residential streets.
Protect yourself: Face masks may not look very good but can help reduce the amount of pollen being inhaled. If you find yourself sneezing a lot during pollen season, consider investing in a painter s mask that can filter the air being inhaled and exhaled. If you are stepping out to do yard work or know that you re going to spend a lot of time in heavy traffic areas, take your antiallergenic medication before you step out instead of waiting for an allergic reaction to begin.
Have plenty of showers: Try making it a habit to have a shower and changing your clothes as soon as you come home. This prevents the outdoor pollen from circulating in your home. Follow this routine even if you ve simply been gardening outdoors. While showering, do not forget your hair. If you do not want to shampoo it every day, simply rinse it out to get rid of all the pollen.

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