OregonSawyer
ArboristSite Operative
That simply is not true. Your med school friend needs to spend more time in class before she starts meeting patients and telling them things that are blatantly incorrect.
The human immune system is very complex, but it is a VERY well known fact that people can be treated for some immune reactions to cure them completely. Dermatologists do it all the time. Conversely, some immune reactions continue to get worse with each new exposure. Bee stings are a famous example which can be treated but often gets worse with each exposure.
A rather well known exception is peanut allergies. These are so severe and life threatening that one researcher was attempting to create a treatment regime. His treatment plan was to expose a person to a very tiny dosage of a slightly modified peanut allergen while they were prepared with a full medical emergency facility to treat the reaction. One of the test subjects was killed, and the treatment plan and research was terminated as a result.
I have had several employees over the years that started out getting vile rashes and blisters from poison ivy, but after years of exposure and sometimes with the Rhus Tox pills, they either became immune or the severity of the rash was reduced to a few itchy bumps on their skin.
So.... Not to sound like a ####, but apparently you didn't read my entire post. First of all I am going to side with somebody who is in her second year at the #3 ranked Primary Care Medical School over somebody who posts on the same arborist forum as I do when it comes to health-related subjects.
My post stated that people can go a long time without being allergic (read, have a reaction to) Poison Oak. BUT once your immune system DOES see it as a threat it will try to attack it; causing a reaction. I then went on to say that once your body DOES react to the oil it would make sense that taking small dosages could start to slowly/slightly reduce the reactions caused by coming in contact with it.
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