Allergies plagues millions of Americans every fall.<br />What causes allergies?<br />Business Insider reports that fall allergies are often caused by weeds like ragweed.<br />Dust also causes allergies.<br />So does mold.<br />Fall allergy symptoms can include a runny nose, nasal congestion, sneezing, or itchy eyes. <br />Those suffering from allergies should start taking allergy medication at the beginning of September to alleviate symptoms before they start.
