Updated December 16, 2014.

More than 25 million Americans have thyroid disease, and as many as half the people with thyroid problems don't even know it yet! This diagnosis failure is often due to unfamiliarity with the risks and symptoms of thyroid disease.

This quiz walks you through some of these most common thyroid risk factors and the frequently seen symptoms of thyroid disease.

After you've answered the questions, you'll get a rating, which will evaluate how many of your responses fit in with someone who is at risk for thyroid disease, or has thyroid symptoms.

This helpful tool can be a useful first step in your effort get a proper diagnosis.

START THE QUIZ NOW!!

Note: This tool is intended for information use only. Do not rely on it to make decisions about your health. Always consult your doctor for personal medical advice.

Mary Shomon, About.com's Thyroid Guide since 1997, is a nationally-known patient advocate and best-selling author of 10 books on health, including "The Thyroid Diet: Manage Your Metabolism for Lasting Weight Loss," "Living Well With Hypothyroidism: What Your Doctor Doesn't Tell You...That You Need to Know," "Living Well With Graves'Disease and Hyperthyroidism," "Living Well With Autoimmune Disease," "Living Well With Chronic Fatigue Syndrome and Fibromyalgia," and the "Thyroid Guide to Fertility, Pregnancy and Breastfeeding Success." Click here for more information on Mary Shomon.