A cool head may be related to excessive mental tension, or it may be caused by vegetative nerve dysfunction and insufficient blood supply to the brain. 1. Excessive mental tension: for example, when encountering the stimulation of stressful events, resulting in excessive emotional tension and anxiety, there may be a cool head, which may also be accompanied by shaking hands, panic and other symptoms. 2. Phytoneurological dysfunction: usually caused by long-term mental trauma, poor living habits, etc., which can lead to increased excitability of some areas of the cerebral cortex, resulting in neurological dysfunction, dysregulation of the autonomic nervous system, which may be manifested in the top of the head cold, accompanied by panic, chest tightness, dizziness, headache and other symptoms. 3. Insufficient cerebral blood supply: Due to insufficient blood and oxygen supply to the local brain tissue, resulting in damage to the sensory nerves, it may cause a cool head, accompanied by dizziness, headache, sleepiness and other symptoms. The coolness of the top of the head may also be caused by other reasons, and should be consulted as soon as possible, after a clear diagnosis of targeted treatment.