Asthma is one type of allergic reaction ... Having an allergic reaction can affect your nose, lungs, throat, sinuses, ears, lining of your stomach, or skin. Delayed reactions, or allergic contact ...

If you have allergies, dry skin, asthma, or just prefer a more humid environment, you've probably got a humidifier at home. Humidifiers add moisture to the air to prevent dryness and require ...