<p>Latex is a milky fluid that comes from the tropical rubber tree. Hundreds of everyday products contain latex. Repeated exposure to a protein in natural latex can make you more likely to develop a latex allergy. If your immune system detects the protein, a reaction can start in minutes. You could get a rash or asthma. In rare cases you could have a severe reaction called <a href="https://medlineplus.gov/anaphylaxis.html">anaphylaxis</a>.</p> <p>Your doctor may use a physical exam and skin and blood tests to diagnose it. There are medicines to treat a reaction, but it is best to try to avoid latex. Common latex products include:</p><ul> <li>Gloves</li> <li>Condoms</li> <li>Balloons</li> <li>Rubber bands</li> <li>Shoe soles</li> <li>Pacifiers</li> </ul> <p>You can find latex-free versions of these products.</p>