Fatigue is one of the key symptoms of hypothyroidism. It is often described as bone-numbing fatigue, caused due to improper regulation of your thyroid levels. Since fatigue is also a sign of other serious or temporary health problems, it is best to see your doctor and get tested, otherwise you may neglect it and not become aware of having hypothyroidism.
This fatigue can develop slowly or come on suddenly. According to health experts, it usually strikes in the morning and the person experiencing it is barely able to lift their head off their pillow in the morning. This is clearly a problematic sign, as if you are healthy and well-rested, you should be feeling refreshed in the morning.