Thyroid issues are most commonly diagnosed in women between the ages of 20 and 40. It’s not always easy to identify when you might have a thyroid problem because the symptoms, such as fatigue and feeling cold, can be so nebulous. In the event that you have thyroid cancer, you might start to notice some swelling in the front of your neck or that your voice is raspier than usual. While it might not identify the underlying cause, your healthcare provider can identify a thyroid problem with a blood test, if you suspect you might have a thyroid problem.