Hi Amber. Allergies can definitely cause this type of reaction but another concern here is hives and angioedema. Although hives and the swelling known as angioedema are an allergic type of reaction, the cause is often not known as compared to allergies where it can be pinpointed with diagnostic tests. Hives comes and goes for sometimes no reason, or at least reasons that are not easy to identify. Speak to your doctor about this condition. You may need to start medication like corticosteroids if antihistamines are not relieving the symptoms. Your doctor will advise your further.