Severe reactions from roe without concomitant fish allergy.

Background: Although fish allergy is common, no studies have been published on allergy to fish roe.

Objective: To describe 2 cases of IgE-mediated allergy to 2 roe species.

Methods: Two patients, one with local symptoms and the other with anaphylaxis following ingestion of roe, underwent skin prick testing (SPT) with 2 roe species, whitefish roe (WFR) and rainbow trout roe (RTR).

Occupational allergic rhinitis and contact urticaria caused by bishop's weed (Ammi majus).

Bishop's weed (Ammi majus) has been known to induce toxic phytophotodermatitis. We now describe IgE-mediated rhinitis and contact urticaria caused by exposure to bishop's weed in a 31-year-old atopic female florist. A skin prick-prick test with bishop's weed flowers gave an 8-mm wheal, and the bishop's weed-specific IgE level in the patient's serum was 9.

Honey allergy is rare in patients sensitive to pollens.

We challenged in a double-blind manner 46 pollen-allergic patients with 30 g of honey and another 32 patients with a placebo (30 g of syrup). Minor, mostly subjective, symptoms were seen in or reported by 26% of those challenged with honey and 41% of those challenged with placebo. In no case could the symptoms with certainty be related to the challenge.