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Corresponding author: Caleb P. Canders, MD, Department of Emergency Medicine, David Geffen School of Medicine at UCLA, 924 Westwood Boulevard, Suite 300 | Box 951777, Los Angeles
Affiliations
University of California–Los Angeles Emergency Medicine Center University of California–Los Angeles, Los Angeles, CA
A 24-year-old woman presented to the Emergency Department with palpitations and watery emesis 2 hours after ingesting a cup of tea. The tea had been brewed from dried flowers that had been picked in a mountainous area of southern California. She had previously dissolved the flowers in oil and applied them topically to resolve bruises. She ingested the flowers in tea in an attempt to relieve postoperative pain after a cesarean section. She had no other medical problems, had no known allergies, and took no other medications or herbal supplements. Physical examination was notable for pulse in the 120s, epigastric tenderness, and multiple episodes of nonbloody, nonbilious emesis. Electrocardiogram showed sinus tachycardia. Complete blood cell count, chemistry, and coagulation panel were normal. What was the cause of her symptoms?
Diagnosis and Treatment
Arnica toxicity. Arnica (Figure), a genus in the sunflower family that grows in temperate areas of the western United States, is the homeopathic remedy most frequently studied in clinical trials.
When used topically, it is believed by homeopaths to resolve bruises and reduce muscle soreness. However, a review of placebo-controlled clinical trials found no data to support its efficacy.
Our patient received intravenous fluids and antiemetics. She was observed in the Emergency Department until her symptoms resolved and vital signs normalized.
References
Ernst E.
Pittler M.H.
Efficacy of homeopathic arnica: a systematic review of placebo-controlled clinical trials.
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