Mold can cause many health effects. For some people, mold can cause a stuffy nose, sore throat, coughing or wheezing, burning eyes, or skin rash. People with asthma or who are allergic to mold may have severe reactions. Mold will grow where there is moisture, such as around leaks in roofs, windows, or pipes, or where there has been a flood. Therefore, it is very important to find and repair the moisture source for the mold.