Allergic Reactions to Legalized Marijuana Use in Colorado

  • William S. SilversEmail author
Clinical Case Studies


The state of Colorado decriminalized marijuana use in 1975, legalized its use for medical purposes in 2000, and voters approved recreational use in 2016. During this period, there has been a dearth of information about respiratory and skin reactions to marijuana use and/or exposure to the substance from working in the industry or home growing conditions. This brief report, based on patient complaints, evidences Cannabis sativa as a mild allergen. However, significant exposure can elicit marked respiratory and dermatologic allergic reactions requiring proper diagnosis and treatment. Additionally, contaminants such as pesticides or mold related to cannabis production, handling, and/or use may cause adverse reactions of a non-allergic nature treatment.


Marijuana use Allegic reactions Medical practice 


Compliance with Ethical Standards

The article is in compliance with the protection of all human and animal rights.

Conflict of Interest

The author declares that there is no conflict of interest.


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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Division of Allergy and Clinical ImmunologyUniversity of Colorado Denver School of MedicineAuroraUSA

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