Almost everyone has had a cold. When a cold, the nose will runny, blocked, or itchy to sneezing. The causes can vary, but the most frequent are allergies and viral infections. Check out the following explanation about the difference between allergic colds and colds due to infection. Colds, or in medical terms called rhinitis, is a sign of inflammation of the nose. This inflammatory process functions to fight organisms, such as bacteria and viruses; or foreign objects, such as dust, animal hair, and cigarette smoke. Colds mostly only last a few days. But in certain conditions, colds can last up to several weeks, even several months. Difference between allergic colds and colds due to infection The main difference between allergic colds and colds due to infection lies in its causative factors. Allergic colds occur because sufferers have allergic reactions to allergens (allergens), such as dust, fleas, mold, fur or animal feces, perfume, cigarette smoke or vehicles, and cold weather....