According to the Asthma and Allergy Foundation of America, the symptoms of ragweed allergy may include stuffy or runny nose, sneezing, eye irritation, puffy eyes, and itchiness in the nose and throat. People who have severe allergies may experience side effects including headaches, chronic sinusitis, asthma attacks and impaired sleep.
As the Asthma and Allergy Foundation of America, ragweed grows throughout the United States and is found more commonly in the East and Midwest. One ragweed plant can produce up to 1 billion pollen grains. About 75 percent of Americans who are allergic to pollen-producing plants are allergic to ragweed. Individuals with a ragweed allergy may also experience symptoms from consuming cantaloupe and bananas. No cure exists for a ragweed allergy, and the best precaution to take is to try to avoid contact with the pollen.