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The American Academy of Clinical Toxicology
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May 4, 2018

Question of the Day – Friday May 4, 2018

Question - What is so-called “black spot poison ivy”?

Answer - The cited reference point out black spot poison ivy is an atypical appearance [of the poison ivy rash that] occurs due to the oxidation of urushiol upon exposure to air in a warm, humid envi- ronment. High-enough concentrations of urushiol on the skin are rarely achieved and maintained for this reaction to occur but, when present, cause both an irritant and allergic contact dermatitis. Note that it is this reaction that forms the basis of the toxicodendron field test—blackening of the resin when sap is directly applied to white paper. (Pittman MA and Lane DR. Black spot poison ivy: under the over of darkness. 2013 J Emerg Med 44(4): e331-e332)

Posted in Question Of The Day
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  • Education & Groups
    • American Board of Applied Toxicology (ABAT)
      • ABAT Exceptional Service Award
      • 2023 ABAT Board of Directors Voting
      • ABAT Newsletter
      • Sitting for the American Board of Applied Toxicology Exam
        • ABAT Examination Study Guide
      • Certification Renewal Documents
      • Life Long Learning Articles (LLSA)
      • ABAT Member Directory
        • Diplomate Verification
      • ABAT Board of Directors Contact Information
    • E-Learning
      • Advanced Hazmat Life Support Training
      • MMTI Fundamentals for Front-Line Practitioners Training
      • TOXISMO Society for the Discussion of Scientific Literature
      • ToxNow
      • Webinars
        • ABAT Journal Club Webinars
        • COVID Webinar Series
    • Toxicology Residency & Fellowship Training Programs
    • Clinical Toxicology Guidelines Collaborative
      • Recommendations
    • Fellows of AACT
    • ToxCoach Mentorship Program
    • Committees
    • Sections
      • Acute & Intensive Care
      • Addiction Toxicology Section
      • Clinical Toxicology In Sports
      • Diversity, Equity, and Inclusion Section
      • Herbs & Dietary Supplements
      • Geriatric Toxicology
      • Occupational / Environmental
      • Envenomations
      • Forensic
      • Pediatric
      • Weapons of Mass Destruction
      • Toxicology History
      • Radiation
      • Trainee and Student
    • Student Chapters
  • NACCT Annual Meeting
    • Meeting Information
    • Register
    • After the Fact CE
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