Hives is a very common condition and about 20% of the world has got it at some point in their lives. There are many causes to it ranging from blood transfusions to certain allergic reactions to food. It starts off as an itchy patch of skin but slowly swells and turns into red welts. There are certain factors which makes the itching worse including stress, alcohol and scratching the area of skin which was itchy in the first place. 

Causes
Here are all the causes and symptoms of hives:
1. Food
Allergic reactions to foods such as nuts, eggs and shellfish are a common cause of hives.

2. Medications
Certain medications also have a side effect of causing hives. Penicillin and sulfa are two of the antibiotics, which can cause hives. Ibuprofen and Aspirin are also two other medications, which are commonly known to cause hives.

3. Infections
Both bacterial and viral infections can lead to hives. Strep throat, urinary tract infections, common cold and hepatitis are some of many bacterial and viral infections, which may cause hives.

4. Stimuli
Certain factors such as temperature, pressure, sun exposure and other physical stimuli may cause hives as well.

5. Plants and animals
Dander in animals are the flakes of skin in their fur. Moreover, coming into contact with certain poisonous plants may cause hives.

6. Insects
When insects sting or bite you, you may get hives.

7. Latex
Latex is a type of rubber used in many types of clothing. It has been said that wearing clothing made out of latex can cause hives.

8. Pollen
Pollen is a light powdery substance produced by plants such as oak trees. It travels through the air and may cause hives if it comes into contact with your skin.

Symptoms
1. Bumps
Itchy red bumps appear on the skin when you have hives. Sometimes, the bumps can be skin-colored as well.
2. Blanching
When the bumps turn white after you press them, it is known as blanching. Blanching is the only clear symptom of hives.

Hives: Causes and Symptoms

Hives are a common allergic reaction that appears in the form of swollen, red bumps or patches on the skin. These usually appear suddenly and cause itchiness. In some cases, it may also sting or burn. Hives can affect any part of the body including the face, ears, tongue, lips and throat. Hives are usually small in size but may grow as large as the size of a dinner plate. In some cases, hives may also join together to form plaques.

Hives are caused as a result of the production of histamines in the body that make plasma leak out of blood vessels in the skin. These histamines are released as a result of an allergic reaction, exposure to chemicals, insect bites, sunlight or adverse reactions to certain medicines. There are four main types of hives:

Acute Urticaria: These hives usually last for less than 6 weeks. They are triggered by insect bites, allergic reactions to food, latex, medicines or by exposure to infections. The most common food items that trigger this type of hives are chocolates, nuts, fish, tomatoes, eggs, soy, wheat and milk. Aspirin and other medicines like ibuprofen, ACE inhibitors and codeine can also trigger these hives.

Chronic Urticaria: Hives that last for longer than 6 weeks fall into the category of chronic urticaria. IT is harder to find what triggers a case of chronic urticaria than it is for acute urticaria. Along with the triggers mentioned above, hormonal disorders, tumours, chronic infections and immune system disorders can also trigger these hives.

Physical Urticaria: Hives caused as a result of physically stimulating skin are called physical urticaria. This includes sudden exposure to heat or cold, sunlight, vibrations, pressure, exercise etc. These hives usually resolve themselves within an hour and only affect the part of the skin that has been stimulated.

Dermatographism: Hives caused by scratching or firmly stroking the skin fall under this fourth category.

Hives can also be genetic in nature. Some people suffer from hereditary angioedema which is a painful swelling under the skin.

Hives caused by an allergic reaction can recur and hence if you suffer from hives you should try and identify the allergen. This can be done by taking an allergen test in a hospital or by changing aspects of your diet and studying the results. Hives are usually treated with antihistamines but in some cases, steroids may also be needed. However, it is usually nothing to worry about.

What Are Hives? What Causes Hives?

If stressed, consuming certain food and medications can trigger skin rashes. This kind of rash is called hives. It is also known as urticaria. Anyone can be affected by hives, at least 20% of people are affected by hives at some time or the other in their lives. The itching could be severe or mild. It starts as a patch of scaly white skin that develops into red welts over time. To make sure the itching does not worsen, scratching, emotional stress, alcoholic drinks and exercise should be avoided.

Symptoms
1. Itchy bumps that are raised and are either red or flesh coloured
2. If the hive is pressed in the middle, the skin whitens this symptom is called blanching.
3. The hive formation can appear anywhere, disappear and then reappear somewhere else.

Common Triggers
1. Certain food like shellfish, eggs, peanuts and other nuts
2. Certain medicines like antibiotics, ibuprofen and aspirin
3. Insect bites or stings
4. Physical causes like pressure, sun exposure, cold, exercise and heat
5. Latex
6. Blood transfusions
7. Bacterial infections
8. Pet allergens
9. Viral infections like the common cold, hepatitis and infectious mononucleosis
10. Certain plants like poison ivy and poison oak
11. Pollen

Treatment
There is no distinct cure for hives. But you can control its symptoms in the following ways:
1. Antihistamines help in blocking histamines, which cause the allergy symptoms. Non sedating or low sedating Antihistamines will be mostly recommended by your doctor.
2. If episodes of hives are several, it may require limited treatment with prednisone. Prednisone will be able to lessen the symptoms.
3. If the symptoms get severe enough so much so that it swells up your tongue and you have problem breathing, then the doctor might prescribe an epinephrine. However, these symptoms can mean another thing, an anaphylaxis shock. Epinephrine is the only treatment for an anaphylaxis shock.

Prevention
If what caused hives to break out is figured out, then measures should be taken to avoid or eliminate the triggers.
1. Avoid eating food items that triggered the symptoms in the first place
2. If harsh soaps, frequent bathing cause hives, they should be avoided
3. Tight clothing should be avoided
4. If cold triggers hives, then wear warm clothing, wrap a scarf and do not swim in cold water.
5. Avoid sun exposure and wear sunblock
6. If a specific medication is causing the hives, inform your doctor.

All About Hives

Hives, also called urticaria are swollen welts or bumps that appear on your skin suddenly.

They itch, burn and sting and can happen anywhere on your body. You can get them on your face, lips, tongue, ears or chest. And in size, they can be as small as an eraser to as large as a plate. They also form plaques and can last for hours or up to several days.

Types

Acute urticaria - These type of hives last less than six weeks. The most common causes are allergies due to certain foods and medications, or infections. These hives can also happen due to diseases or insect bites.
Chronic urticaria - Hives lasting more than six weeks come under this category. What causes them is usually more difficult to identify than what causes acute urticaria. In some cases, chronic hives are caused due to thyroid disease, hepatitis or even cancer. This type can affect your internal organs like lungs, muscles, and the gut. Thus, symptoms include muscle soreness, shortness of breath, vomiting, and diarrhoea.
Physical urticaria - These types are caused due to direct physical stimulation of the skin due to cold, heat, sun exposure, vibration, pressure, sweating, and exercise.
What causes hives?

Hives happen mostly due to allergies. Some of the common hive triggers are-

Certain foods, especially peanuts, eggs, nuts and shellfish- Fresh foods are more likely to cause hives as compared to cooked foods. Certain food additives and preservatives can also play culprits. Medicines like penicillin and sulfa- based antibiotics, aspirin and ibuprofen which are non-steroidal anti-inflammatory medications, high blood pressure drugs like ACE inhibitors, and painkillers such as codeine can also trigger hives. Other things that may cause it are:

Insect bites
Latex
Transfusion of blood
Bacterial infections, including urinary tract infections and infected throat
Viral infections- common cold and hepatitis
Pollen grains
Plants like poison oak and poison ivy
Sunlight
Cold weather
Pet dander 
If you wish to discuss about any specific problem, you can consult a dermatologist.

What Are Hives? What Causes Them?

The last molar teeth in the mouth are called as wisdom teeth. While in some people they erupt completely into the mouth and function with no problem whatsoever, in others, they remain embedded in the bone, erupt incompletely, erupt at an angle, or are covered by bone or a flap of tissue. They are absent in many.
Of late, dentists recommend removal of wisdom teeth, more a preventative than remedial measure. Some of the reasons for wisdom tooth removal are listed below-
Impaction: Often, wisdom teeth do not have enough space to erupt in their normal position. This can only be evaluated properly on an x-ray. If the x-ray shows that the tooth is unlikely to erupt because of being blocked by a root or bone, this needs to be removed.
Pericoronitis: The tooth partially erupts into the mouth but is covered by a flap of gum. This attracts food and bacteria to accumulate, leading to decay and infection, a condition called as pericoronitis. Very common in the lower wisdom teeth, it leads to severe tooth pain, painful swallowing and swelling of the lymph nodes. This is the most common cause for wisdom teeth to be removed. An x-ray will reveal the tooth to be infected and sometimes periapical abscess may also be present.
Cysts: Impacted teeth can develop fluid-filled cysts which can cause severe and even permanent damage to the jaw bone, adjacent teeth and nerves. Dentigerous cysts are the most common type.
Alignment: Misaligned wisdom teeth exert a constant mild pressure on the adjacent teeth which can hamper the alignment and reverse the effects produced by braces. The bite may be altered also, thereby necessitating removal.
Adjacent Tooth Damage: If the malposed wisdom tooth is causing pocket formation or decay in the adjacent teeth, it is time to get them removed.
Recurrent Sinus Infections: With their proximity to sinuses, there could be constant pain and pressure and infection of the sinuses. This is another indication for their removal.
However, not all wisdom teeth need to be removed. If they have erupted fully, are healthy, produce a good bite, and can be cleaned easily, they do not require removal.
During the teenage years and through 20s, check with your dentist on the health of the wisdom teeth. X-rays can be taken to monitor them and for early identification of problems. If they need to be removed, it is easier to take them out when you're young. The bone surrounding the impacted tooth is less dense, and therefore easier. The ability of the body in general and the jaw bones in particular to heal is also better at a younger age. 


Wisdom Teeth - When To Get Them Removed

Wisdom teeth are known to be the final molars to grow out and they complete the set of permanent teeth. They generally start to erupt during the late teens or in the beginning of twenties. 

In case of some people, there is a possibility that the wisdom teeth may never erupt, while others may even grow four and more wisdom teeth. 

Do all wisdom teeth create dental problems?
No, if a wisdom tooth has completely erupted through the gum and tissue, without actually harming the teeth next to it, it does not require to be extracted. But, this is only if the individual is able to clean and brush it thoroughly. The wisdom teeth should be properly examined and dental care is necessary to prevent any complications. 

When do wisdom teeth need extraction?
Proper oral care of the teeth will keep them healthy and clean. But there may arise a situation, in which the removal of the wisdom teeth is quite necessary:

1. In certain cases, the wisdom tooth may erupt at a weird angle, compromising the teeth next to it. This may make it difficult to clean the teeth thoroughly, thus resulting in the onset of bacterial growth and periodontal disease. In this case, the wisdom teeth should be removed as soon as possible. 

2. While the wisdom teeth grows out, it may happen that there is not enough space for it to grow properly. As a result the adjacent teeth may face pressure due to crowded teeth, leading to headaches, toothaches and jaw pain. It is best that the wisdom teeth is extracted in this situation.

3. In case a wisdom tooth develops a cavity, it should be extracted. 

4. An impacted wisdom tooth, that is, if it has only partially grown out of the tissue, should also be extracted before it can cause serious complications.

All About Wisdom Teeth

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