Others may be triggered by viral infections or as an allergic reaction to an allergen. The most likely triggers for
acute urticaria are allergies to pets, horses
, latex and foods, such as shellfish and nuts, bee or wasp stings, allergies to medicines, Viral infections, such as glandular fever and herpes, dental and sinus infections, fungal infections, blood transfusions and vaccines.
Please check out these causes and consult a dermatologist.