Previously I presented my husband’s request to start
using insect repellent on our baby, who is four months old. I wanted to do some research on the different
insect repellents and their safety before I started to use it on the baby. I did a review of scientific research that I
could access online and have several sites you can look at to see for yourself.
Last month (8/2012) the American Academy of Pediatrics
published tips on preventing West Nile Virus.
It clarified for me that I can use up to 30% DEET on babies over 2
months old, but it should only be applied once a day. It also should be wiped off at the end of the
day. There have been cases of DEET
toxicity but using the lowest effective concentration of DEET on only the areas
of exposed skin and wiping it off after returning indoors reduces exposure.
OK, so I could use a DEET insect repellent on the
baby, but this talk of toxicity isn’t sounding great to me so I still have more
research to do to make my decision.
The AAP tips page also mentioned Picaridin, which
has been available in Europe but only recently has been available in the
US. It does not mention how old babies
have to be to use it or possible side effects.
The CDC recommends DEET (N,N-diethyl-m-toluamide),
Picaridin, or Oil of lemon eucalyptus as the three most effective insect
repellents. In general, it is wise to
use the lowest concentration of the key ingredient that is effective for the
amount of time you are going to be outside.
Kidsmeds has a great webpage describing the various insect
repellents and how long they are active.
It includes DEET, Picaridin, Eucalyptus, and Citronella. Citronella is only effective for about thirty
minutes, but the other three can last about 6 hours in the stronger
concentrations.
Dr. Mark Fradin reviewed the available research on insect
repellents in 2001. He reported that in
50 years there were only 50 significant cases of DEET toxicity. These cases seemed to have had long-term,
excessive, or inappropriate use of DEET repellents but the details of exposure were
not well documented. 14 of these were
children under age 8 who developed encephalopathy. Wait, that sounds as bad as West Nile
Virus. But 14 cases in 50 years with
millions of uses every year meants it is pretty rare.
He also found few studies on Picaridin, but indicated low concern
for toxicity.
A 2008 risk assessments review for the insect repellents DEET and
Picaridin had essentially the same conclusions as Dr. Fradin.
Oil of lemon eucalyptus may seem more natural than DEET or
Picaridin, but the labeling for oil of lemon eucalyptus says
it is not to be used on children under the age of three and Picaridin is derived from pepper.
A final couple of websites for you to look at:
Traditional http://www.travmed.com/health_guide/ch8.htm
Natural http://www.kitchenstewardship.com/2012/07/31/all-natural-bug-and-insect-repellent-reviews-10-brands/#more-15284
Natural http://www.kitchenstewardship.com/2012/07/31/all-natural-bug-and-insect-repellent-reviews-10-brands/#more-15284
So far for me, it’s toss-up between DEET and Picaridin. I think they are both safe enough for the
baby when used correctly. DEET is more
studied but also has more documented side effects than Picaridin. Tomorrow I will look at just how big the
risk is for West Nile Virus.
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