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Just like ragweed and birch Tree , marijuana plants may trigger sensitised reactions in some people , according to a raw review of previous studies .
And because of the increasing use and cultivation of marijuana that has followed in the wake oflegalization in some places , allergy to marijuana may be on the ascension , experts say . People can be allergic to the plant ’s pollen , or to its smoke .
" Although still comparatively uncommon , allergic diseaseassociated with [ marijuana ] exposure and manipulation has been report with increased frequence , " write the authors of the revaluation , published March 3 in the diary Annals of Allergy , Asthma & Immunology .
In fact , allergic reaction to marijuana have likely go underreported , because of marijuana ’s illegal status , tell Dr. Purvi Parikh , an immunologist of the Allergy & Asthma internet , a nonprofit organization that promotes allergic reaction research and didactics .
" Now as the prevalence [ of marijuana use ] is increase , and with the legalisation in many state , it is last to become more and more more vulgar , and all these cases will surface that were not recognized before , " Parikh enunciate . [ 9 Weirdest Allergies ]
multitude who are allergic to the marijuana plant ’s pollen or smoke may get symptom such as a fluid nose , kindling of the nasal passage , and cough and sneezing , accord to the followup . Some people who have touch marijuana have germinate hives , and itching and swelling around the eyes . There have also been reports of bronchial asthma triggered by exposure to its pollen , according to the review .
One affected role who feed hemp seed - encrusted seafood feel thesevere hypersensitised reaction called anaphylaxis , which affect the whole soundbox and is potentially fatal , according to the revaluation . ( The man ’s doctors subsequently excluded the seafood as the grounds of his hypersensitised reaction through examination . ) In another cause observe in the reassessment , a individual who used marijuana intravenously also live anaphylaxis .
Some mass have live allergic reactions while handling marijuana at employment , according to the review . A raspberry stock breeder develop allergy symptom after give hemp seeds to his birds , and one ill-starred medical marijuana grower , who antecedently was able to fume pot recreationally , suddenly developed hive and itching after handling the plant .
For somemarijuana drug user , it is not only the industrial plant itself that may cause an allergic reaction . Pot can become very moldy when it is being stored , and mass who are sensitised to mold may have reactions , Parikh said .
Some multitude could even receive reactions to both the flora and mould , as manypeople with allergiesare allergic to multiple substances , she tell .
The review designate out two cogitation conducted decades apart in Omaha , Nebraska , where theCannabis plantgrows widely and is cultivated commercially . In the studies , researchers appear at how usual cannabis allergy were among people in the area . In the first study , issue in 1940 in the Nebraska Medical Journal , research worker get that 22 percent of 119 patients with allergy symptoms were allergic to hemp pollen .
In the former field of study , release in 2000 in the journal Annals of Allergy , Asthma & Immunology , investigators found that 61 percentage of 127 patient with allergy in Omaha were sensitised to hemp , according to the report .
People who live in areas where large quantity of marijuana plants are grown may be peculiarly prone to experience supersensitized reactions to the pollen , Parikh said . " The amount makes a large difference in the preponderance of allergies . "
