Microsoft Certified IT Professional (MCITP) Note All MCITP certifications retired between July 31, 2014, and July 31, 2016. Please check the retired certifications and retired exams pages for the list of certifications and exams. Your retired certification will remain on your transcript.
A. Hives (urticaria) are raised, red spots on the skin that often itch. Hives are usually indicative of an allergic reaction. Hives are a common reaction in people who have allergies. A number of substances can trigger an outbreak of hives, including foods, medications, pollen, animal dander, or insect bites. Hives can also develop as a result of sun or cold exposure, infections, excessive perspiration, and emotional stress. The reason why stress seems to precipitate an outbreak of hives in many people is not completely understood but is likely related to the known effects of stress on the immune system.
Hives Triggers. 1  Some food (especially peanuts, eggs, nuts and shellfish) 2  Medications, such as antibiotics (especially penicillin and sulfa), aspirin and ibuprofen. 3  Insect stings or bites. 4  Physical stimuli, such as pressure, cold, heat, exercise or sun exposure. 5  Latex. 6  Blood transfusions.