food allergy rash

Causes of allergies
Things that cause allergic reactions are called allergens.

Common allergens include

tree and grass pollen (hay fever)
house dust mites
foods, such as peanuts, milk and eggs (food allergy)
animal fur, particularly from pets like cats and dogs
insect stings, such as bee and wasp stings
certain medicines
Check if it's an allergy
Symptoms of an allergic reaction can include

a runny nose or sneezing
pain or tenderness around your cheeks, eyes or forehead
coughing, wheezing or breathlessness
itchy skin or a raised rash (hives)
diarrhoea
feeling or being sick
swollen eyes, lips, mouth or throat

What happens at your appointment
A GP may arrange some allergy tests or refer you to a specialist allergy clinic to have them.

Tests you may have include:

a skin prick or patch test – where a small amount of the allergen is put on your skin to see if it reacts
blood tests – to check for allergens that may be causing your symptoms
a special diet where you avoid or eat less of a food you might be allergic to, to see if your symptoms get better
Treatments for allergies
Treatments for allergies include:

trying to avoid wellbutrin for sale the thing you're allergic to whenever possible
medicines for mild allergic reactions like antihistamines, steroid tablets and steroid creams
emergency medicines called adrenaline auto-injectors, such as an EpiPen, for severe allergic reactions
desensitisation (immunotherapy) for severe allergic reactions – this involves carefully exposing you to the thing you're allergic to over time, so your body gradually gets used to it and does not react so badly (this should only be done by a medical professional)
Your specialist will give you an allergy management plan that will explain how to manage your allergy.There are many causes of allergy, and symptoms vary from mild to potentially life threatening. Allergy is one of the major factors associated with the cause and persistence of asthma.

The definition of allergy
Allergy occurs when a person reacts to substances in the environment that are harmless to most people. These substances are known as allergens and are found in dust mites, pets, pollen, insects, ticks, moulds, foods and some medications.

Atopy is the genetic tendency to develop seroquel 25 mg for sale allergic diseases. When atopic people are exposed to allergens they can develop an immune reaction that leads to allergic inflammation. This can cause symptoms in the:

Nose and/or eyes, resulting in allergic rhinitis (hay fever) and/or conjunctivitis.
Skin resulting in eczema, or hives (urticaria).
Lungs resulting in asthma.
What happens when you have an allergic reaction?
When a person who is allergic to a particular allergen comes into contact with it, an allergic reaction occurs:

When the allergen (such as pollen) enters the body, it triggers an antibody response.
The antibodies attach themselves to mast cells.
When seroquel 300mg for sale the pollen comes into contact with the antibodies, the mast cells respond by releasing histamine.
When the release of histamine is due to an allergen, the resulting inflammation (redness and sweliing) is irritating and uncomfortable.
Similar reactions can occur to some chemicals and food additives. However if they do not involve the immune system, they are known as adverse reactions, not allergy.