Less Common Causes of Anaphylaxis
Food-Dependent, Exercise-Induced Anaphylaxis
Food-dependent, exercise-induced anaphylaxis is very rare and occurs only when a person eats a specific food and exercises within three to four hours after eating. Those experiencing this type of reaction typically have asthma and other allergic conditions. Foods that have been reported to cause food-dependent exercise-induced anaphylaxis include wheat, shellfish, fruit, milk, celery, and fish, although any food may be a potential culprit.
Food-dependent, exercise-induced anaphylaxis appears to be twice as common in females as it is in males and occurs most often between the late teen years to the thirties.
Idiopathic Anaphylaxis
Idiopathic anaphylaxis is a severe reaction in which no cause can be determined. It can affect individuals of all ages, although females are affected much more frequently than are males. As with other forms of anaphylaxis, idiopathic anaphylaxis can be life-threatening. Prophylactic daily treatment with a combination of medications can control the symptoms, and most cases subside spontaneously after several months or years (that is, the person stops having episodes).
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