Background: Allergy to fruit and vegetables exhibit geographic variation regarding the severity of symptoms and depending on the sensitization profile of the patient. These sensitization profiles and routes remain incompletely understood. Cannabis is a very popular drug and derived from Cannabis sativa, a plant containing lipid transfer proteins (LTP) also known as important allergens in plant and fruit allergies. In this study we sought to elucidate a potential connection between C. sativa allergy and plant food allergies. Methods: A case-control study involving 21 patients consulting for plant food allergies. Twelve patients were cannabis allergic and 9 had a pollen or latex allergy without cannabis allergy. Testing for cannabis IgE implied measurement of specific IgE, skin testing and basophil activation tests. Allergen component analysis was performed with a microarray technique. Results: Plant food allergy in patients with documented cannabis allergy had more severe reactions than patients without cannabis allergy and frequently implied fruits and vegetables that are not observed in a (birch) pollen-related food syndrome. With the exception of 1 patient with cannabis allergy, all were sensitized to nonspecific (ns)-LTP. Conclusion: Our data suggest that illicit cannabis abuse can result in cannabis allergy with sensitization to ns-LTP. This sensitization might result in various plant-food allergies. Additional collaborative studies in different geographical areas are needed to further elucidate on this hypothesis.
Despite their frequent use, allergy to illicit drugs and narcotics is rarely reported in literature. We present a review of the different classes of drugs of abuse that might be involved in allergies: central nervous system (CNS) depressants (such as cannabis, opioids and kava), CNS stimulants (cocaine, amphetamines, khat and ephedra) and hallucinogens such as ketamine and nutmeg. Diagnosis of drug and narcotic allergy generally relies upon careful history taking, complemented with skin testing eventually along with quantification of sIgE. However, for various reasons, correct diagnosis of most of these drug allergies is not straightforward. For example, the native plant material applied for skin testing and sIgE antibody tests might harbour irrelevant IgE-binding structures that hamper correct diagnosis. Diagnosis might also be hampered due to uncertainties associated with the non-specific histamine releasing characteristics of some compounds and absence of validated sIgE tests. Whether the introduction of standardized allergen components and more functional tests, that is, basophil activation and degranulation assays, might be helpful to an improved diagnosis needs to be established. It is anticipated that due to the rare character of these allergies further validation is although necessary.
A 73-year-old man with a history of diabetes was urgently referred to our emergency department because of severe pain of his genitalia and pubical region. Physical examination revealed an extensive subcutaneous emphysema and edema of his abdomen. Computer tomography confirmed an extensive necrotizing fasciitis, diagnosed as Fournier's gangrene. Despite the efforts made, the patient did not survive. And a review of the medical approach of this short of a life-threatening form of necrotizing soft tissue infection with a high mortality rate.
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