Causes of tingling and dullness in the head include overwork, cerebrovascular lesions, electrolyte disorders, and psychosomatic factors. Biochemical examination, head nuclear magnetic, CT, scale examination, etc. are needed. 1. Overwork: If it is only recent sleep deprivation and overwork that cause stuffiness and numbness on the top of the head, without any organic lesions, adequate rest and scalp massage can relieve it. 2. Cerebrovascular lesions: blood vessel stenosis, hardening, plaque caused by cerebral ischemia, hypoxia can lead to numbness and dullness of the top of the head. It can be examined by head nuclear magnetism, CT and so on. 3. Electrolyte disorders: hypoglycemia, anemia, electrolyte disorders can also cause numbness in the head. Need to carry out blood tests, check the blood routine, blood biochemistry and so on. 4. Psycho-spiritual factors: anxiety, depression, insomnia, etc. can cause head discomfort, and need to conduct a scale check. The appearance of numbness and boredom on the top of the head, it is recommended to consult a doctor in a timely manner to clarify the cause of the disease and then carry out targeted treatment.