| Bug
Bites |
written by Dr. Michael Bharier
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Flea Image |
Mosquito
Image
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Of course, you can get bitten at any time of the year, but summers
are worse. The most common offenders are mosquitoes, mayflies, fleas
and black flies especially up north in New Hampshire). We have separate
concerns about tick bites and spider bites (see below).
"The insects love me!!" Some people do seem more prone
to bites than others. Why? It's probably a combination of factors.
Perfumes and foods attract insects. Some people also react more
to bites than others. When a mosquito bites someone, it actually
injects a little of its saliva (yucchhh!). What we all a "bite"
is actually a reaction to this saliva, and some people are more
allergic to it than others.
Can you tell what is biting? Usually not, unless you see the insects.
When the bites are in a cluster, it suggests flea bites. Certain
ant bites have a very characteristic appearance.
Prevention
Insect repellents containing DEET are still considered the best,
reports about other products including catnip notwithstanding. If
used correctly, DEET is safe. (The reports of toxicity have all
been cases where it was used to excess, where it was abused). For
small children, a lower strength (10-15%) is preferred. I prefer
the drops to the sprays. It's also a good idea to avoid the use
of fragrance when exposed to biting insects and to be sure any food
is cleansed off the skin.
Appearance
Most of us know what bites look like. There is a central point
(or puncta) within the bump. Sometimes the reaction may get very
large or even blister.
Treatment: for mild reactions, soothing products such as calamine
lotion or anti-itch products, such as one we carry in the office
or many others available at pharmacies are enough. We do not recommend
the use of topical Benadryl (diphenhydramine) products because of
their risk of sensitization reactions. For more severe reactions,
we may prescribe steroid creams.
Ticks
| Deer Ticks |
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Unfortunately, Rhode Island and the neighboring states have a very
high incidence of Lyme disease. This is transmitted by the deer
tick, which is very small. The disease is caused by bacteria called
Borrelia which are transmitted by the tick bite. Around here the
deer tick is carried not only by deer but by the white-footed mouse,
which lives in everyone's backyard.
When to suspect Lyme: If you've had a tick bite (or think you might
have had) and a rash develops at the site which keeps enlarging
(they say 8 cm. which is more than 3 inches). Then you should see
us. If we suspect Lyme, we'll order a blood test and may do other
evaluation. You can get Lyme without a rash. If you've had a tick
bite and develop muscle or joint aches, you should probably be evaluated
by someone expert in Lyme, such as an infectious disease specialist.
Lyme is treated with antibiotics. Ticks may transmit diseases other
than Lyme.
How to remove a tick: It is generally recommended to grasp the
tick with a forceps near the head and lift it gently away from the
skin. If the mouth parts break off, they should also be removed.
Brown Recluse Spider |
Black Widow Spider
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Spider Bites
Spider bites can look just like insect bites (spiders are not insects).
However, they may sometimes be more severe and result in skin breakdown
(necrosis). If this happens, you should consult us.
There are two types of spider around here which are venomous, the
black widow spider and the brown recluse spider. We recommend that
you try to know what these look like (it's quite easy to pull up
pictures of these spiders online). If you do get bitten by a spider
and are able to capture it for identification, this might be helpful.
The black widow spider is jet black with a red "hourglass"
shape on its abdomen. The brown recluse spider is smaller and brown
with a light brown violin-shaped form on it. If you do get bitten
by a black widow spider or a brown recluse spider, or if you are
not sure, or for any severe bite reaction, you should consult us
immediately. For extremely severe reactions, trouble breathing or
massive swelling, you should go at once to the emergency room. There
is an antivenin available for the black widow bite. The brown recluse
bite reaction may be extremely debilitating and cause massive tissue
breakdown (necrosis), needing hospital admission, - and this may
come several days later - so it is important not to delay in seeking
help. The attached illustrations
show the severity of tissue breakdown that may occur. They are extremely
graphic and not for the faint-of-heart, so please use your judgment
before viewing them. Early intervention may help prevent this awful
situation.
Bee Stings
Bee Image |
The two most important things to know about a bee sting are these.
First, if you know you are allergic to bee stings, you should consult
your primary doctor or an allergist about it before you are exposed
to bees again, and should probably equipped with an emergency source
of epinephrine, such as an Epipen, as delays in treatment may be
life-threatening. The allergists sometimes offer desensitization
protocols. If you did not previously know you were allergic and
start to develop severe symptoms, such as wheezing, trouble breathing,
feeling faint or massive swelling, you should get emergency treatment
ASAP. The second concern is how to remove the stinger of a bee.
When a bee stings, it leaves the stinger behind in you (then dies).
This stinger is full of venom. You do not want to inject more venom
into you in the process of removing it. So the best way to do it
is to grasp the tip of the stinger firmly with a forceps (or two
wooden sticks, if there is no forceps available) and pull it gently
out. Icepacks may then be helpful until you seek more care.
Contact us
or your physician if you have any questions or concerns about bug
bites.
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