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?

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?

 Hives , also known as urticaria, is the outbreak of pale red, swollen bumps on the body. It can occur on any part of the body including the face, back, arms or legs. It is a type of hypersensitivity reaction in which the cause for the reaction is idiopathic (unknown). Also, it can come in various shapes and sizes. Hives can be associated with redness, itching, and a burning and stinging sensation. These can last for more than a minute or even more than that; up to days.

What causes hives?
Most of the times, hives are idiopathic, i.e. the reason that causes this type of hypersensitivity reaction is unknown. The bumps are caused by the action of histamine that makes the plasma in the blood leak out of the small blood vessels. Histamine is a substance that is released from a specialized cell and is what causes allergic responses in general. There are three types of hives- namely, acute, chronic urticaria and physical urticaria. Acute urticaria is when the hives last for less than six weeks. Chronic urticaria occurs when the hives last for more than six weeks. 

Physical urticaria refers to the condition when the hives are triggered due to causes such as heat, cold, sun exposure, sweating, pressure and exercise. Although, this condition is mainly idiopathic, there are common causes that may trigger this condition such as:

Foods such as nuts, fish, chocolates, milk and milk products
Environmental triggers such as pollen grains, dust etc
Medications such as ibuprofen or paracetamol
Insect bites
Latex
Blood transfusion
Bacterial infections including strep throat and urinary tract infection
Pet dander
Plants such as poison oak or poison ivy
What are the symptoms of urticaria?
Hives are usually self-diagnosable. The various symptoms of urticaria are:

Swollen red bumps known as weals
The red bumps can occur suddenly and subside all of a sudden as well
 Blanching which is characterized by the whitening of the swollen red part.
They occur on any part of the body and can change shapes, and sizes. It can become larger or it can reduce in size; it can also move around in the body.

Hives - Most Common 9 Reasons Behind It!

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

Hives or urticaria is an outbreak of reddish swollen bumps around the skin surface, formed mainly due to the body s response to particular allergens. Generally, the infectious bumps are of varied shapes and sizes and last for about 5-6 weeks. Although not a serious medical condition, hives can cause tremendous discomfort to the concerned person and affect his/her daily activities. Hives can be cured with a prescribed dosage of antihistamines or oral corticosteroids.

Causes of hives

Although the exact reason behind their formation is still unknown, researchers suggest that this disorder occurs as a response to involuntary histamine release by the skin blood vessels (that in turn, causes a leakage of blood plasma). Some other factors that can be responsible are:

Hives can occur due to insect or parasite bites.
Hives can also result as a side effect of painkillers such as codeine and other anti- inflammatory drugs such as ibuprofen or ACE inhibitors.
Excessive exposure to sunlight or high levels of stress (leading to high cortisol levels in the body) can also result in hives.
Intense scratching around the same spot can also result to hive formation.
Excessive alcohol intake can render you even more vulnerable to this disease.
Excessive intake of foods such as eggs, fish, nuts, chocolate and berries might also cause hives. Additionally, excessive consumption of certain food preservatives can also trigger the release of histamine.
Suffering from serious underlying medical conditions such as cancer, hepatitis or thyroid disorders can make you prone to chronic cases of hives (which might last for more than 6 weeks).
Symptoms of hives 
The symptoms of hives include, but are not limited to:

Appearances of several reddish welts around the face or arms which might cause a severe itchy sensation.
Painful and abnormal swelling around the mouth
You might also feel tightness in your chest along with recurring bouts of dizziness.
If not treated promptly after diagnosis, hives might result in life-threatening allergic reactions, such as Anaphylaxis (narrowing down of the bronchial tubes, thus causing significant breathing trouble) and auto-immune disorders such as rheumatoid arthritis.

7 Things that Can Cause Hives

Unlike other teeth which erupt at specific period of time, the wisdom teeth, in normal adults, erupt anytime from late teenage years to adulthood. The refined food habits in the recent times have reduced the need for a third molar. Also, our jaw sizes have reduced with evolution, and oftentimes, there is less space for these to erupt completely, causing their impaction. The chances of infection developing within the tooth and in the surrounding tissues is very high, requiring removal. Before you go ahead with removal, know the following four things.

Get a buddy: In addition to the effects of anesthesia, there also would be moderate pain and discomfort, depending on how traumatic the extraction was. It is always best to have someone accompany you for the visit. This also helps you reach home safely without having to drive.
Numb tongue and lips: The wisdom tooth removal is done under a local anesthesia where the entire quadrant is numbed before the procedure. Therefore, the chances of chewing on the tongue and the lip are quite high. Be careful to consciously avoid this as there are a lot of people who do not feel pain, but continue to chew on the tongue or lip and end up with injuries.
Pain Management: Once the effect of anesthesia wears off, the pain will slowly set in, and will depend on how traumatic the extraction was. It is always advisable to take a pain killer before the anesthetic effect wears off, usually 30 to 40 minutes after the extraction process is over.
Diet: For the first couple of days, stay on a completely soft diet with nothing spicy, hard, or hot to eat. One of the best things to have after an extraction is an ice cream, which can be continued for a couple of days after the extraction. Yogurt, smoothies, milkshakes, mashed vegetables and well-cooked rice are all good food choices.
Smoking: If you have had an extraction, avoid smoking for at least a week. The negative pressure created during smoking can dislodge the clot that is formed in the tooth socket. This can lead to a complication called dry socket, which can be very painful. Avoid smoking at all costs, especially with wisdom tooth extractions.
Postoperative follow-up: Based on the complexity of the extraction, a postoperative follow-up would be required. Be prompt in following up with your dentist for suture removal, check on socket healing and postoperative irrigation of the surgical site. Resume routine oral hygiene practices as recommended by the doctor.
Wisdom tooth removal requires a little extra caution as compared to a normal extraction, the ideal thing to do is to follow your dentist s advice.

Extraction of Wisdom Tooth - Things To Remember!

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