1/7. Phytophotodermatitis associated with parsnip picking.Phytophotodermatitis to certain plant groups is a well recognised entity. The combination of sunlight exposure and contact with plants of the umbelliferae family leads to the development of painful, erythematous, and bullous lesions and later to cutaneous hyperpigmentation. Agricultural workers and many clinicians often fail to make this link when patients present with these lesions. An incident involving 11 patients is presented to high-light this problem.- - - - - - - - - - ranking = 1keywords = plant (Clic here for more details about this article) |
2/7. Photocontact allergy to diallyl disulfide.Although phototoxic reactions to plants are common, photoallergic contact dermatitis to plants and plant products rarely occurs. Our objective was to review the importance of including diallyl disulfide in the evaluation of patients with suspected photosensitivity. Phototests for ultraviolet B, ultraviolet A, and visible light as well as patch tests and photopatch tests for 49 allergens from the new york University skin and Cancer Unit Photopatch Test Series were performed. Three patients had positive photopatch-test results to diallyl disulfide, which is the allergen in garlic. The authors conclude that although photocontact allergy to diallyl disulfide is rare, this allergen should be included in photopatch-test series.- - - - - - - - - - ranking = 1.5keywords = plant (Clic here for more details about this article) |
3/7. liver transplantation for erythropoietic protoporphyria. Report of a new case with subsequent medium-term follow-up.We report a new case of successful liver transplantation in a 36-year-old patient with terminal hepatic failure due to erythropoietic protoporphyria. Data regarding protoporphyrin levels in erythrocytes and feces, before and after transplantation, seem to indicate that in this case protoporphyrin overproduction was in part due to liver synthesis. Four years after surgery, the patient is completely free of skin photosensitivity. His liver function tests are normal; there are no visible protoporphyrin deposits or ultrastructural abnormalities in his new liver. However, recurrence of the disease in the long term cannot be excluded, since erythrocyte protoporphyrin levels remained elevated after liver transplantation.- - - - - - - - - - ranking = 3.5keywords = plant (Clic here for more details about this article) |
4/7. Phototoxic dermatitis due to chenopodium album in a mother and son.chenopodium album L. subs. album (chenopodiaceae) is an annual herb with fibrous roots. The plant grows worldwide and frequently in moist areas. Sometimes, the young parts of this plant can be cooked and eaten as a vegetable. In this article, we report a mother and her adult son, in whom phototoxic reaction developed on the sun-exposed body areas after eating this plant of chenopodiaceae family because of rare presentation. We thought that this reaction was probably due to furocoumarins constituent within the plant.- - - - - - - - - - ranking = 2keywords = plant (Clic here for more details about this article) |
5/7. sunlight and the plant: a toxic combination: severe phytophotodermatitis from Cneoridium dumosum.A severe case of phytophotodermatitis occurred in a patient who had spent several hours walking through an area densely populated with Cneoridium dumosum. This patient's co-worker experienced a similar reaction after undergoing patch testing of an area of skin and exposing it to sunlight. Voluntary patch testing by one of the authors produced a reaction consistent with the other two cases. Approximately twenty other cases were described by a U.S. Fish and Wildlife Service ranger in students who came into contact with the plant during a field trip with him to Baja california, mexico. Cneoridium dumosum is a common native bush that grows in the chaparral vegetation zone of southern california and Baja california, mexico. In a search of Poisindex, medline, Agris International, and Agricola databases, no previous reports of toxic exposures were found.- - - - - - - - - - ranking = 2.5keywords = plant (Clic here for more details about this article) |
6/7. Psoralen plus UVA protocol for Compositae photosensitivity.BACKGROUND: patients allergic to sesquiterpene lactones found in Compositae plants may develop severe photosensitivity, which can result in persistent light reaction. Treatment of these exquisitely photosensitive individuals can be very difficult, often requiring hospitalization. Although some treatment regimens have used psoralen plus UVA (PUVA) therapy, no specific outpatient protocol has been established OBJECTIVE: The purpose of this study was to develop an effective PUVA outpatient regimen to treat compositae photosensitivity. methods: A prednisone-assisted PUVA protocol was established in which the prednisone does was decreased weekly, and the PUVA dose was increased during the same time interval. RESULTS: Both patients enrolled in the study experienced dramatic improvement in their previously unresponsive eruptions. CONCLUSIONS: Two men aged 66 and 80 years were subjected to this protocol. Both men had chronic photodistributed dermatitis that resolved with this treatment and in one instance has remained clear for 18 months without needing further puva therapy.- - - - - - - - - - ranking = 0.5keywords = plant (Clic here for more details about this article) |
7/7. Allergic contact and photoallergic contact dermatitis to plant and pesticide allergens.BACKGROUND: The panel of patch test allergens used for the evaluation of patients with suspected photoallergy typically does not include plant and pesticide allergens. The prevalence of allergic contact dermatitis and photoallergic contact dermatitis to plant and pesticide allergens was determined for this subgroup of patients. observation: Positive reactions were detected in 12 of 26 patients who were tested with our photoallergen series: 5 with allergic contact dermatitis, 5 with photoallergic contact dermatitis, and 2 with both. Four of the 12 patients had positive patch and photo-patch test reactions to plant allergens, pesticide allergens, or both. The positive patch test reactions were to the plants taraxacum officinale (dandelion) and tanacetum vulgare (tansy) and to the pesticides folpet and captafol. Positive photo-patch test reactions were to the pesticides folpet and captan. The histories of the patients suggested that 2 or 3 of the 4 patients had clinically relevant reactions. In the other 8 patients, positive reactions to the patch and photo-patch tests included fragrances, sunscreens, and antibacterial agents. CONCLUSION: Plant and pesticide allergens should be included in the patch and photo-patch test series used for the evaluation of patients with suspected photoallergy.- - - - - - - - - - ranking = 4keywords = plant (Clic here for more details about this article) |