30 Thyroid Symptoms That Are Too Important to Ignore

11. You Can't Tolerate Heat

Ever felt like you're about to melt just because the sun came out for a second? If your thyroid is overactive, it could be why you're suddenly sensitive to heat. Your thyroid helps regulate your body's temperature, but when it's not working right, it can throw that system off balance. With hyperthyroidism, you might feel excessively hot and sweat even when you're in a cool environment. It's like your body is stuck in overdrive, making you feel overheated and uncomfortable all the time.