Speaking with a stiff tongue may be associated with high blood pressure or cerebrovascular disease. Common symptoms of high blood pressure include headache, blurred vision, and a stiff tongue, which are often caused by poor blood circulation. However, if the above symptoms suddenly appear, we need to be highly vigilant against cerebrovascular disease. When cerebral infarction or cerebral thrombosis occurs, part of the brain tissue becomes ischemic or hypoxic necrosis, resulting in numbness of the limbs, speech impediment, and can also cause a hard tongue. This situation may have serious consequences, need to pay great attention to, as soon as possible to seek medical treatment. Therefore, the hardness of the root of the tongue when speaking suggests that it is related to high blood pressure or a precursor of diseases such as cerebral thrombosis, so you can go to the neurology department of the hospital to seek medical treatment.