Here is a helpful table showing the possible cross-reactivity that can occur with this common condition. Some studies have shown that treatment with allergy shots can improve the symptoms of oral allergy syndrome. Median time from incident antibiotic to fluoroquinolone challenge was 6 years (1 day to 11 years). Cross-reactivity occurred in three (14) patients for details see Table S1 (available as Supplementary data at JAC Online). Peeling the food before eating may be helpful as well. Ninety percent of patients had additional antibiotic allergies other than fluoroquinolones 86 had a -lactam allergy. It is advised to avoid eating these raw foods especially during high allergy season. Therefore most patients can tolerate the cooked or processed versions of the foods triggering symptoms. A patient who develops dyspnea and stridor following haloperidol is probably experiencing laryngeal dystonia. Severe allergic reactions to haloperidol are either nonexistent or extraordinarily rare. Most of the allergens are acid and heat labile, whatever food is swallowed is typically rapidly degraded by digestive enzymes and gastric acid. There are almost no reported cases of anaphylaxis, angioedema, or cutaneous allergy due to haloperidol. Rarely does this cause severe throat swelling leading to difficulty swallowing, breathing or progressing into anaphylaxis however there is a small risk and thus is advised to practice caution when eating foods that trigger this. Patients with an allergy to cephalosporins can receive aztreonam (a monobactam and beta-lactam) without any concern of cross-reactivity, except if the cephalosporin allergy is to ceftazidime, because ceftazidime and aztreonam share a common R1 side chain that can result in cross-reactive allergic reactions. It is generally considered a mild form of food allergy. This is a form of contact allergic reaction causing itchiness or swelling of the mouth, face, lips, tongue and throat usually immediately after eating the culprit food. This confuses the immune system and can cause a cross reaction resulting in oral allergy syndrome. This reaction occurs because the proteins found in plant-based foods are very similar to those found in pollen. Do you have seasonal allergies? Do you get an itchy mouth or throat after eating raw fruits, vegetables and/or nuts? If so, you may be suffering from oral allergy syndrome.
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