heracleum/hypersensitivity

Photocontact allergy to psoralens in Heracleum laciniatum occurred in two persons volunteering for investigations into phototoxicity of plant homogenates and purified psoralens. Photoallergy was noted following the fifth exposure in case 1, and the sixth in case 2. Testing with diluted solutions

The use of a trimmer for a lawn, which is covered with phototoxic plants such as Heracleum sphondylium and other Umbellifers, can lead to a phytophotodermatitis (trimmer's rash). An erythema of the light exposed skin, following a moderate hyperpigmentation, can cause a focal, vesicular lifting of

OBJECTIVE To analyze the types, frequency and severity of plant poisonings in Switzerland over 29 years. METHODS Retrospective analysis of severe poisonings with toxic plants reported to the Swiss Toxicological Information Center (STIC). Assessment of the causality, severity of symptoms and the