Do Allergies Cause Asthma?

People who have certain kinds of allergies are more likely to have asthma. Do you have allergies that affect your nose and eyes, causing stuff like a runny nose or red, itchy eyes? If so, you're more likely to have asthma, too. Whatever causes the allergic reaction, such as pollen or dust, can also trigger asthma symptoms...
http://kidshealth.org/kid/health_problems/allergiesimmune/allergies_asthma.html