Observance of the following special dietary recommendations:
The following foods or food additives may be the cause of urticaria and should be avoided if a repeated association is observed:
Milk, eggs
Fish, shellfish
Strawberries
Nuts
Avoiding foods high in histamine may improve symptoms of chronic spontaneous urticaria (intervention study; 56 patients). The authors recommend the low-histaminediet for a duration of 3 to 4 weeks for symptom reduction as well as reduction of antihistamine consumption.