There are some notable triggering agents. Foods, the most common foods that can cause hives are nuts, fish, eggs, fresh berries, milk, and certain food additives. Although anyone can be sensitive to anything. Medications, antibiotics, aspirin, high blood pressure medications, painkillers and cancer drugs have all been implicated in causing hives. Urticaria can also be caused by infections such as strep throat, mononucleosis, hepatitis, or even a single upper respiratory tract infection like the common cold. There are also physical [?], temperature of note being both cold and hot, cold from cold weather or cold exposure and even body heat from exercise have induced hives. Vibration as a physical modality can also induce hives. Sun exposure has also been implicated.