The forehead is prone to sweating, usually for two reasons: first, from the perspective of Chinese medicine is a deficiency evidence, usually kidney deficiency, kidney Yin deficiency, kidney Yang deficiency, accompanied by spleen deficiency can also have kidney deficiency and liver fire. The second aspect, if the forehead sweating, from the perspective of Western medicine, there are usually three common endocrine diseases: 1, diabetes, when the human body will often have the symptoms of transient hypoglycemia, then there will be forehead and limbs, under the neck sweating. 2, hyperthyroidism when suffering from hyperthyroidism, the forehead and limbs often overheating and lead to sweating. 3, rare endocrine diseases such as pheochromocytoma also The sweating of the forehead is often present.