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      Eucalyptus oil inhalation–induced seizure: A novel, underrecognized, preventable cause of acute symptomatic seizure

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          Summary

          Eucalyptus oil ( EO) is an essential oil that is widely used across the globe as an over‐the‐counter remedy for common ailments. EO‐induced seizure ( EOIS) has not been recognized as an entity, and physicians rarely ask the history of exposure to eucalyptus oil when seeing a patient with first episode of seizure. Here we report 10 cases of EO inhalation–induced seizures seen over the past 2 years in three tertiary care hospitals. Eight patients had GTCS and two had CPS. We aim to raise awareness of seizures induced by exposure to eucalyptus oil.

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          Plant-induced seizures: reappearance of an old problem.

          P Burkhard, Karim Burkhardt, Charles-Antoine Haenggeli … (1999)
          Several plant-derived essential oils have been known for over a century to have epileptogenic properties. We report three healthy patients, two adults and one child, who suffered from an isolated generalized tonic-clonic seizure and a generalized tonic status, respectively, related to the absorption of several of these oils for therapeutic purposes. No other cause of epilepsy was found, and outcome was good in the two adult cases, but the course has been less favorable in the child. A survey of the literature shows essential oils of 11 plants to be powerful convulsants (eucalyptus, fennel, hyssop, pennyroyal, rosemary, sage, savin, tansy, thuja, turpentine, and wormwood) due to their content of highly reactive monoterpene ketones, such as camphor, pinocamphone, thujone, cineole, pulegone, sabinylacetate, and fenchone. Our three cases strongly support the concept of plant-related toxic seizure. Nowadays the wide use of these compounds in certain unconventional medicines makes this severe complication again possible.
          Article 0 comments Cited 26 times – based on 0 reviews     Review now
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            Essential oils: renewal of interest and toxicity.

            Martine Vigan (2015)
            Essential oils are complex mixtures of substances from vegetable matter, the definition of which is based on their method of extraction. They are characterized by their ambivalence, their ambiguity and their disparity: plant families from which essential oils are extracted are numerous; the composition of each essential oil depends not only on the family but also on the part of the plant from which it is extracted, and sometimes on the soil where the plant grows, or even on the time of the harvest. Gas chromatography is therefore necessary to characterize an essential oil. Essential oils can be found in cosmetics, in drugs, and in food. They are natural substances, but natural is not synonymous with harmless. Evaluation of the toxicity of essential oils and European regulation are underway.
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              Seizure caused by dermal application of over-the-counter eucalyptus oil head lice preparation

              Neil Waldman (2011)
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                Author and article information

                Contributors
                Thomas Mathew:
                ORCID: http://orcid.org/0000-0002-3941-8020
                chakkuthom@hotmail.com
                Journal
                Journal ID (nlm-ta): Epilepsia Open
                Journal ID (iso-abbrev): Epilepsia Open
                Journal ID (doi): 10.1002/(ISSN)2470-9239
                Journal ID (publisher-id): EPI4
                Title: Epilepsia Open
                Publisher: John Wiley and Sons Inc. (Hoboken )
                ISSN (Electronic): 2470-9239
                Publication date (Electronic): 04 July 2017
                Publication date Collection: September 2017
                Volume: 2
                Issue: 3 ( doiID: 10.1111/epi4.2017.2.issue-3 )
                Pages: 350-354
                Affiliations
                [ 1 ] Department of Neurology St. John's Medical College Hospital Bengaluru Karnataka India
                [ 2 ] Department of Neurology Apollo Hospital Bengaluru Karnataka India
                [ 3 ] Department of Neurology Sakra World Hospital Bengaluru Karnataka India
                Author notes
                [*] [* ]Address correspondence to Thomas Mathew, MD DM, Department of Neurology, St. John's Medical College Hospital, Sarjapura Road, Bengaluru‐560034, Karnataka, India. E‐mail: chakkuthom@ 123456hotmail.com
                Author information
                http://orcid.org/0000-0002-3941-8020
                Article
                Publisher ID: EPI412065
                DOI: 10.1002/epi4.12065
                PMC ID: 5862119
                SO-VID: 303b18dc-fd3f-4f96-8dfc-87783d8e96ef
                Copyright © © 2017 The Authors. Epilepsia Open published by Wiley Periodicals Inc. on behalf of International League Against Epilepsy.
                License:

                This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial‐NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.

                History
                Date accepted : 28 May 2017
                Page count
                Figures: 0, Tables: 1, Pages: 5, Words: 3047
                Categories
                Subject: Short Research Article
                Subject: Short Research Article
                Custom metadata
                source-schema-version-number 2.0
                component-id epi412065
                cover-date September 2017
                details-of-publishers-convertor Converter:WILEY_ML3GV2_TO_NLMPMC version:version=5.3.3 mode:remove_FC converted:21.03.2018

                Keywords: epilepsy,essential oils,eucalyptus oil,seizure
                Data availability:
                Keywords: epilepsy, essential oils, eucalyptus oil, seizure

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