By Bill Kirk
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Extra resources for All About Volcanoes
Pinkeye usually happens when bacteria or a virus gets into the conjunctiva, a clear covering over your eye and the inside of your eyelids that keeps the eye wet with mucus and tears. Through all the itching and oozing, your eyesight should not be affected. First Response Place a cool or warm washcloth over your eyes to relieve the itching and get rid of any crust. After that, gently clean your eyelids with warm water, using cotton balls to get rid of the goo. Make sure no one else uses your washcloth and throw away those cotton balls when you’re done.
A sneeze is an involuntary reflex, which means you can’t control it or make it happen. When the particles in your nose try to get past its defenses, they trigger the release of histamines (see • 54 • page 18). This irritates the nerve cells in the nose, which causes the cells to send a message to the brain telling the brain that a foreign substance is somewhere it shouldn’t be. Your brain then sends a message to all the muscles needed to produce a sneeze and . . achoo! A normal sneeze can send dust particles up to twenty feet away, reaching speeds of 35 miles per hour.
You’re sneezing and coughing, your head hurts, your nose is stuffed up, you have no energy, your throat feels itchy, you’ve got the chills . . there’s a whole lot going wrong with your body when you are infected with one of the more than 200 cold viruses that exist out there. And, as with any virus, medicine won’t make it go away. A cold is very infectious, and it’s the most common reason kids miss school and adults miss work. , there are more than one billion colds caught, and if you don’t take good care of yourself, you could catch up to twelve a year!