Abstract

Plants have a range of biologically active chemicals, some of which have an adverse effect on human health following exposure by ingestion or by skin or eye contact. The concentration of toxins may vary in different parts of the same plant and within the same species it may vary between different individuals, depending on factors such as the environment where the plant was grown and the season. The severity of poisoning varies according to the part of the plant and amount to which the patient is exposed, the route of exposure, and the individual's susceptibility. Accidental exposure may occur as a result of misidentification of wild salads, vegetables, fruits, or plants used for traditional medicines. Other circumstances include exposure to plant material used or abused for recreational purposes. Dermal contact with plants causing adverse health effects may occur as a result of occupational exposure or leisure or hobby exposure. This chapter describes the symptoms and management of several plants that can cause poisoning on either accidental or intentional exposure.

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