The prevalence of allergy in mastocytosis is similar to the general population. Anaphylactic symptoms are more prevalent in males and in patients with elevated IgE. The coexistence of atopy does not influence mastocytosis-associated symptoms.

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We report the case of a 42-year-old non-smoking man, who had worked as a carpenter for 6 years and who reported a history of rhinorrhea, paroxysmal sneezing, nasocular pruritus, lacrimation, wheezing and dyspnea attacks while preparing a mixture to seal the junctures between wooden panels. Allergy study consisted of skin prick testing (SPT) to inhalants, foods and Lathyrus sativus flour (LSF) extract, specific bronchial provocation test with LSF extract, cytological analysis of sputum, specific IgE antibodies against LSF, and histamine releasing test with dilutions (1:5, 1:25, 1:125, 1:625) of LSF. The results demonstrated occupational rhinoconjunctivitis and asthma due to LSF exposure. We provide a review of published reports to date.

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