Home > Medical > Allergy > What happens to my body What happens to my body Allergies – it’s war Like all armed forces, your immune system makes mistakes. In real life it's called friendly fire. In your body it’s called an allergic reaction. Learn more about this mechanism. Hay fever The term hay fever is a misnomer: the condition is not caused by hay, nor does it produce fever. The clinical name is seasonal allergic rhinitis, which is a type of allergy. Why does my nose cause such trouble? Your nose has the task of filtering out the unwanted substances and preventing them from entering the lungs. Quiz Why am I so tired? » Subscribe Allergy Newsletter » Join Body Talk » Ask CyberDoc » Common allergens What's in a sneeze? Anatomy of a sneeze Sneezing, also called sternutation, is your body's way of getting something irritating out of your nose. Here's how it works. How mast cells work Your body is a weapon. The immune system is a machine of war, ready to take on invaders. The immune system has its own internal affairs department: it can identify cells which are Asthma "Asthma" comes from the ancient Greek word meaning "panting" and, if you've experienced an asthma attack, you'll understand why. For some, an asthma attack feels as though an load more articles advertisement From our sponsors Your retirement - a healthy mindset So many people, why so alone? You can still enjoy the sweet things in life Take the sugar test, it could save your life.