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Introduction
Insect sting allergies occur in people who have an abnormally high sensitivity to venom, which cause a physical reaction. Allergic reaction to bee stings occurs when a person becomes sensitized to the venom from a previous sting. Allergic reactions to bee stings can be life threatening.
Who gets it?
Anyone can suffer allergic reactions to bee stings.
Statistics
It is estimated that between one and two million people in the United States are severely allergic to stinging insect venom.
Each year 90 to 100 deaths from sting reactions
are reported, but many more deaths may be occurring, mistakenly
diagnosed as heart attacks, sunstrokes or attributed to other causes.
Although more people die from severe allergic
reactions to bee stings each year than from spider or snake bites, only
a small number of people with bee sting allergies suffer these types of
fatal reactions.
Causes
Ordinarily, bee venom is not toxic and will only cause local pain and swelling.
The allergic reaction comes when the immune system is over sensitized
to the venom and produces antibodies and other disease fighting cells
in response to the allergen. The antibodies release chemicals that
actually injure the surrounding cells and cause the physical symptoms
of an allergic reaction. Histamines and other substances are released
into the bloodstream, causing blood vessels to dilate and tissues to
swell. These substances can affect the skin, mucous membrane, mucous
gland, and smooth muscle cells.
Risk
Life-threatening allergic reactions can occur without any previous
symptoms of allergy. In fact, most people with bee sting allergies do
not experience a severe reaction with their first sting. Multiple
stings increase the risk of an allergic reaction, but just one sting
will cause serious symptoms for someone who is severely allergic.
Allergic Reaction Symptoms
Most people stung will experience a reaction with redness, pain,
swelling and some itching only at the sting site. If the reaction
progresses quickly to sites other than the sting site or is followed by
difficult breathing or choking at the throat, the person is
experiencing a "systemic" allergic reaction (anaphylaxis) requiring
emergency medical treatment.
Remember that if you are stung on the hand and your face begins to
swell or hives break out all over your body, this is a serious
condition requiring emergency room attention.
Normal Reaction:--Lasts a few hours. Sting site is painful, reddened, may swell and itch, but will quickly dissipate.
Large Local Reaction:--Lasts for days. Sting site is more painful,
swelling and itching may be present both at the sting site and in
surrounding areas.
Severe Allergic Reaction:--Can commence rapidly (in a few minutes)
after the sting occurs. The whole body is involved. Person may feel
dizzy (lightheaded), nauseated and weak. There may be stomach cramps
and diarrhea. There can be itching around the eyes, a warm feeling or
coughing, hives breaking out, followed with vomiting and swelling.
There can be wheezing, difficult breathing (shortness of breath) or
swallowing, hoarse speech, drop in blood pressure, shock,
unconsciousness and darkened skin following. These symptoms may be
warning signs of a dangerous condition called anaphylaxis. Reactions
may occur in a few minutes with most deaths within 30 minutes, but some
within 15 minutes and some in five minutes or less. A patient in
anaphylactic shock needs immediate medical treatment.
Diagnosis
Bee sting allergies are diagnosed according to the specific symptoms that follow a bee sting.
Treatment
People who are allergic to bee stings should, of course, avoid situations in which they are likely to get stung.
Anaphylactic shock is treated with an injection of epinephrine, a
hormone that stimulates the heart and relaxes the airways. This may be
combined with an injection of an antihistamine, which counteracts the
histamine produced by the immune cells during an allergic reaction.
Those who are known to have severe bee sting allergies should carry a
self-injection kit, including antihistamine tablets, for emergency
treatment. However, they should still seek medical care after any type
of reaction to a bee sting.
People who are severely allergic may undergo a desensitization program,
in which a series of injections of bee venom are given in increasingly
larger doses until the body shows that it can be tolerated. This type
of program must be administered by an allergy specialist and it may
take anywhere from 15 to 20 weeks to develop an immunity. These are
followed up with monthly booster shots.
Normal Reaction Sting Treatment
For stings causing itch, irritation, redness and swelling at the sting site, the following may be useful:
- Ice
- Baking Soda
- Meat
Tenderizer--for people not allergic to bee stings. Use any brand with
Papain. Make a paste with a few drops of water to a teaspoon of meat
tenderizer and quickly apply to the sting to reduce pain and
inflammation (breaks down components of sting fluid).
- Ammonia Solution--Apply a 1 to 2.5 percent solution no more than three to four times daily.
- Oral
Antihistamines--Tablets may be chewed for faster relief, but liquids
are more readily absorbed after oral ingestion (Chlortrimeton,
Dimetane, Teldrin). Epinephrine Inhaler (Bronkaid mist, Primatene,
Medihaler-Epi)
- Topical Steroids (Cortaid, Dermolate, Lanacort, etc.)
- Local Anesthetics (Benzocaine, Bactine, Lanacaine, Solarcaine, etc.)
- Oral Steroids--Prescription only.
Prevention Tips
There are many ways you can help prevent bee stings.
- Spray patio, picnic and garbage
areas with permethrin or pyrethrins. A licensed pesticide applicator or
pest control operator can apply restricted use pesticides as well.
- If you destroy the
nests (aerial and ground) yourself, use a commercially available
stinging insect control aerosol containing Baygon, pyrethrin,
permethrin or resmethrin which can shoot a high-volume spray stream 15
to 20 feet, giving excellent quick knockdown and kill of wasps and bees
hit. After dark or in the evening, most have returned from foraging to
the nest. Thoroughly saturate the nest with spray, contacting as many
insects as possible.
- Do not stand directly
under an overhead nest, since some insects receiving some of the spray
may fall but retain their ability to sting for some time. Repeat
treatment if reinfestation occurs. Note: is always best, if allergic,
to hire a professional exterminator to remove a nest. Never try to burn
or flood a nest with water since this practice will only make these
stinging insects angry and aggressive.
- When eating outdoors,
keep food covered until eaten, especially ripe fruit and soft drinks.
Any scent of food, such as outdoor cooking, eating, feeding pets or
garbage cans, will attract many bees and wasps (especially yellow
jackets).
- Keep refuse in
tightly sealed containers. Dispose of refuse frequently (two times per
week or more) during late summer and early autumn when most activity
occurs.
- Be careful not to mow
over a nest in the ground nor disturb a nest in a tree or eaves of the
home. Any disturbance often will infuriate and provoke stinging.
- Should a bee or wasp
fly near you, slowly raise your arms to protect your face and stand
still or move slowly away through bushes or indoors to escape.
- Never move rapidly, which often provokes attack.
- Never
strike or swing at a wasp or bee against your body since it may be
trapped causing it to sting. If crushed, it could incite nearby
yellowjackets into a frenzied attack. The wasp venom contains a
chemical "alarm pheromone," released into the air, signaling guard
wasps to come and sting whomever and whatever gets in their way.
- If a bee or wasp gets
into a moving car, remain calm. The insect wants out of the vehicle as
much as you want it out. They usually fly against windows in the car
and almost never sting the occupants. Slowly and safely pull over off
the road, open the window and allow the bee or wasp to escape.
Unfortunately, many serious accidents have resulted when the driver
strikes or swings at the insect during operation of the vehicle. A
small insecticide aerosol can for control of stinging insects, kept in
the car away from children and pets, can be used in an emergency.
- Pick fruits as soon as they ripen.
- Pick
up and dispose of any fallen fruit rotting on the ground. Keep lawns
free of clover and dandelions, which attract honey bees.
- Avoid close contact
with flowering trees, shrubs and flowers when bees and wasps are
collecting nectar. Vines, which may conceal nests, should be removed
from the house, if practical.
- Don’t use flowery colognes, soaps, or lotions.
- Don't
wear bright, colored, loose-fitting clothing, which may attract and
trap insects. Flowery prints and black especially attract insects.
- If a bee is near you, move away.
- Avoid shiny buckles and jewelry.
- Wear a hat and closed shoes (not sandals).
- Wear light-colored (white) clothing, preferably cotton (never wool).
Other Tips
Hypersensitive persons should never be alone
when hiking, boating, swimming, golfing, fishing or involved outdoors
since help is likely needed in starting prompt emergency treatment
measures if stung.
It is wise for the person to carry a card or to
have an identification bracelet or necklace, such as "Medic Alert,"
identifying the person as hypersensitive to an insect sting. It will
alert others to the condition in an emergency when sudden shock-like
(anaphylactic) symptoms or unconsciousness (fainting) occurs after one
or more stings.
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