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The CFTR protein may live in many parts of our body. Depending on where the CFTR lives will determine what CF symptoms you have. Usually, CF gives us problems in the lungs, pancreas and skin.The Sweat Gland
You know about sweating, right? It can happen in gym class or even when you’re taking a test in school. Well, in normal skin, sweat is produced in glands beneath the skin, travels to the skin’s surface through tiny tubes, or ducts, and then gets sucked back into the skin, like a sponge. Sweat is made up of water, sodium and chloride (salt), which you may have heard about in science class. In kids with CF, too much chloride and sodium are in the sweat. This is why your skin tastes saltier than someone who doesn’t have CF. 
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