Human: I've been told that I have a thyroid problem. What does this mean? Assistant: 
Thyroid problems can cause many different symptoms, such as fatigue, weight gain or loss, constipation or diarrhea, dry skin, and hair loss. If you are experiencing any of these symptoms, it is important to see your doctor for an evaluation. Your doctor will be able to determine if you have a thyroid problem and what treatment options may be best for you.