While I've never been diagnosed, I'm fairly sure I have a moderate skin allergy to marijuana. Being allergic to many things and solidified some confidence in my self-diagnosis. If for example some MJ crumbs drop onto bare skin and get agitated, e.g. movement, skin irritation is almost a given in my case.
Needless to say my allergies seem to be only 'skin-deep.' While I've never been checked medically for what MJ smoking/vaping/ingesting does to me, I'm doing just fine in that arena
.
Anyways, I HAVE read a couple 'marijuana as an allergen' research articles and it seems its not as uncommon as it might seem. Either way, if you clarify what type of allergy this person has maybe that can clear some things up? Is it a skin-contact issue like me or does it include exposure to smoke? The latter seems a little hard to believe to me unless its an allergic reaction to smoke in general.