 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!

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?

Hives, also known as  urticuria  is a skin disorder that is characterized by formation of white or red welts on the surface of the skin. The sizes of the welts may vary and can last for up to six weeks or more. The disease is not life threatening but the general discomfort associated with it can interfere with your daily activities. The symptoms of hives are treated by taking anti-histamines and anti-itching medications.

Let s take a look at the symptoms:
1. Development of red or white welts, especially on torso, arms and the face
2. The welts may cause severe itching
3. Painful swelling on various parts of the body such as cheeks, lips and the insides of the throat
4. You may experience tightness in the chest and feel dizzy

What might be the causes?
Hives occur when certain cells are triggered into releasing histamine (an organic nitrogenous compound). The various factors that trigger this condition are:
1. Insects bites or parasite bites
2. Continuous scratching at the same spot
3. Various pain medications
4. Prolonged exposure to sunlight
5. High levels of stress
6. Excessive consumption of alcohol

This disease can lead to severe complications which have been listed below:
1. Severe allergic reaction: Anaphylaxis is an allergic reaction that causes the bronchial tubes to narrow down thus, obstructing normal breathing. It is a condition that may, in certain cases, lead to death as well. Hence, you need prompt medical attention if you suffer from this complication.

2. Breathing complications: Swelling on the inner parts of the throat may obstruct normal breathing and cause you to pass out. It can also increase the risk of certain immune disorders such as rheumatoid arthritis and celiac disease (a disorder caused by eating gluten rich foods in excess).

Treatment
The treatment for this disorder includes taking anti-histamine medications that help in blocking histamine (organic compounds which help to regulate physiological functioning) in the body. You may also be administered anti-inflammation medications to reduce inflammation. Wear loose clothing and stop scratching away at the affected regions of the body to make sure you do not aggravate the condition.

Hives Rash or Urticuria - 6 Cause Behind Skin Disorder

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, or  Urticaria  in medical parlance, is a skin condition characterized by the appearance of itchy swellings on the skin surface. Hives may break out on any part of your body and can be of different sizes. It is not a prolonged condition and generally lasts for a few hours. Urticaria or hives usually occur due to the secretion of certain chemical substances such as  histamine  from underneath the skin surface.

Some of the possible causes of hives are mentioned below:

Overexposure to sunlight
As a side effect of medicines such as aspirin, painkillers or antibiotics.
Insect bites
Any food related allergy may also trigger hives
People allergic to certain chemicals or latex can also develop hives
Sensitivity to temperature or water can cause hives
Infections such as Hepatitis or chronic diseases such as thyroid may result in the occurrence of hives.
Alcohol or caffeine intake can cause chronic urticaria
The most common symptoms of Hives include:

Skin becomes swollen
Frequent itching sensation
Skin inflammation is also common
You may feel a burning sensation
Within a short span of time, it may disappear and then again reappear on different parts of the body
Red and white patches appear all over the skin surface known as  wheals 
Hives generally go untreated as the condition subsides within a few hours. But sometimes, hives can be chronic or acute in nature. If so, it would require treatment as it can give rise to further complications. Some of the treatment methods are given below:

Corticosteroids may be prescribed by the doctor to control the formation of hives and give relief from inflammation.
Antihistamines (drugs which hinder the impacts of histamines; mainly used for curing allergies) are advised to patients with chronic urticaria. It controls the effects caused due to the discharge of histamines.
Knowing and avoiding the trigger conditions may prove to be helpful.
Applying menthol creams can give comfort due to its cooling properties.

Hives - Causes, Symptoms & Treatments

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