There are many reasons why the body is hot and the head is not hot, divided into physiological factors and pathological factors. Physiological factors can be seen in wearing too thick clothes, the trunk heat and so on, pathological factors can be seen in the trunk injury, resulting in heat dissipation obstacles and so on. The details are summarized as follows. 1. Physiological factors: when the clothes are too thick, it will lead to heat dissipation obstacles in the trunk, and there will be the situation that the body is hot and the head is not hot, which can be relieved by timely replacement of clothes. When the torso is heated, there will be a similar situation, such as the torso position into the bath tub, the head is exposed, then there will be a hot body and head is not hot. 2. Pathological factors: when the skin in addition to the head, other parts of the scleroderma, there will be heat dissipation obstacles to appear on the body hot head not hot. In addition, if the torso area of the burns, damage to the skin, resulting in heat dissipation obstacles, will also appear on the body hot head not hot situation. If you have fever, you should consult a doctor for a clear diagnosis and treatment if physiological factors are ruled out.