heracleum/erythema

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

Acute photodermatitis provoked by skin contact with giant hogweed (Heracleum mantegazzianum) and exposure to ultraviolet radiation is a rare cause of phytophotodermatitis in children. We report the case of a 10-year-old girl with extensive photodermatitis after contact with giant hogweed and

Phytophotodermatitis from Heracleum laciniatum is described in 2 typical cases. Experimental phytophotodermatitis was produced using homogenates from leaves of the plant and long-wave ultraviolet light. The homogenates of leaves produced strong phototoxic reactions. The minimal phototoxic erythema

Investigations on light reactions in a patient with vitiligo are presented. The minimal erythema dose (MED) in the UVB area was approximately 1/3 of that in persons of skin type II. The application of furocoumarins (psoralens) increased light tolerance by 1 MED at 300-310 nm. Action spectrum studies

Sosnowsky's hogweed (Heracleum sosnowskyi Manden.) is a genus of plants in the family Apiaceae which also includes Giant Hogweed (Heracleum mantegazzianum Sommier and Levier). They are both found in Central Europe, mainly in neglected green areas or riversides. Sosnowsky's hogweed was brought to