Allergies & Asthma: Read Articles on the Causes, Symptoms & Treatment of Allergies & Asthma in Children & Adults

Allergies involve an oversensitivity to allergens including such substances as pet dander, pollen, food and drugs. Allergies can cause sickness, trigger asthma attacks and exacerbate other issues. Symptoms include congestion, rashes, itchiness, shock and death. Common allergies include allergic rhinitis (hay fever), and certain food allergens such as peanuts. Learn more about the causes, treatments and diagnosis of allergies and asthma.