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Health And Beauty Tips
3 Holiday Makeup Looks
Adverse food reactions
Allergic rhinitis
Anaphylactic shock adults
Anaphylaxis
Asthma
At the scene of an accident
Avoiding allergens
Babies failing to thrive
Back injuries
Bleeding
Children and young people
ColdMediDangerous Infants
Colds and flu
Disguise a Double Chin
Drinking Coffee Helps Fight Alzheimer's,
Drug allergy
Eczemas
Eye Allergies
Finding the time
Foods th8Lower Cholesterol
Grass-Fed Beef The Natural Alternative
Head Injury
Heart Attack
Heartburn
Help for Tired Eyes
Hepatitis C
How much exercise do I need
Injuries and treatment
Jaundice
Look Younger by Morning
Lung cancer cases
Maintaining  target weight
Makeup Tricks 4 Dark Skin
Match Makeup 2 Your Outfit
Moving on
Opening airway
Perfect Lipstick
Fixes CommonHair Problem
Recovery position
Risky Business for Teens
Sensible slimming
Sleep Disorders
Summer hay fever
Supporting someone with cancer
Tips to give up smoking
Treatment
Venom allergies
What's the right activity 4me
Why get fit
More Tips
 
 
 

 

 

 

 

                                                                                                

 

 

 

 

                                                      Health And Beauty

 

 
 

Venom allergies

Allergic reactions to stinging insects are becoming more common.
The number of hospitalisations and deaths from wasp, bee and
hornet stings is rising.

What causes them?
An initial sting by a wasp or honeybee causes a person to become
sensitised. It may take up to six weeks for someone to become fully reactive.
This means their first sting may have no ill effects, but subsequent stings
are likely to cause an allergic reaction.

An enzyme in sting venom provokes the allergic reaction. Wasps can
inflict multiple stings, while a bee leaves its stinger in the skin and dies
immediately.

What are the symptoms?
Most stings induce localised pain and swelling due to a toxic
non-allergic reaction from the venom. The victim then recovers with no
special treatment.

Mild allergic sting reactions present with redness and pain over a large
area of skin. More generalised reactions with swelling, urticaria (hives)
and redness spanning two joints may also occur.

In more severe reactions, there may be whole-body hives and swelling,
with breathing difficulties, a 'feeling of dread' and generalised anaphylaxis
with low blood pressure and shock.

Venom allergic reactions usually occur within ten minutes of the sting

Venom allergic reactions usually occur within ten minutes of the sting.
Life-threatening reactions may occur in highly allergic individuals,
older people and those with heart and respiratory diseases, especially
if someone experiences multiple stings.

Stings on the face and neck may react worse than stings on a finger or
toe. Bee keepers and gardeners are high-risk groups for bee sting
anaphylaxis.

The longer the time between stings, the less likely it is a severe reaction
will occur. Young children are more likely than adults to outgrow insect
sting allergies.

What's the treatment?
Mild reactions require no more than antihistamine medication.
More severe reactions and anaphylaxis require resuscitation with
adrenaline by injection, antihistamines, steroids and intravenous fluids.

All wasp and bee allergic people should wear a MedicAlert bracelet
and carry an adrenaline auto-injector.

Never exercise or take a hot bath after a sting as this may accentuate
the reaction.

If someone you're with is stung and has an anaphylactic reaction,
immediately call for help. If trained in resuscitation, maintain their
airway and circulation and inject adrenaline, if available, into the thigh
muscle.

How are they diagnosed?
Skin-prick testing using venom extracts, and specific venom RAST
blood tests can be used to diagnose allergy to wasp and bee venom.

Unfortunately, these tests aren't as accurate as those for inhalant allergies.
About ten per cent of people with a history of venom anaphylaxis have
negative blood and skin tests.

Can venom allergies be prevented?
In summer, avoid areas frequented by wasps, particularly picnic sites,
bins and areas where food is consumed outdoors. Don't drink sugary
drinks outdoors and beware of wasps crawling into soft drink cans.

Never walk barefoot on grass in summer and don't wear bright clothes,
which attract wasps.

If a bee or wasp approaches, don't panic or swat at the insect.
Wait quietly for it to go away or walk away slowly.

Insect allergic people release a pheromone chemical odour from their skin,
which seems to attract wasps and bees, so they tend to get stung repeatedly.

Wasp and bee venom desensitisation immunotherapy by injection is
available and highly effective.

The injections are given over a five-year period and usually lead to
complete resolution of the allergy with long-term protection.
It should only be undertaken in specialist allergy clinics,
as severe reactions are possible.

 

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