Common causes of intracranial hemorrhage in newborns:1, birth injury. 2, hypoxia. 3, preterm birth (gestational age less than 34 weeks, weight often less than 1500 g more.) 4, intrauterine infection. 5, late-onset vitamin K1 deficiency. 6, cerebrovascular malformation (rare) divided into congenital and infectious. Premature infants commonly have hemorrhage in the germinal matrix (i.e., subventricular hemorrhage). Subdural hemorrhage is common in full-term infants, and the cause is mostly seen in birth injuries, often occurring in huge babies with large heads, abnormal fetal position or high forceps assisted delivery. Severe posterior cranial recess hemorrhage. It is caused by injury to the transverse and rectus sinuses and nearby blood vessels, and is often associated with a tear in the cerebellar curtain. Neurological symptoms appear soon after birth due to the compression of the brainstem by the hemorrhage. Such as restlessness, screaming, and convulsions. Due to the compression of the midbrain and cerebral bridge, they show doll’s eye movements, unequal pupils, abnormal light reflexes, progressive impairment of consciousness aggravated by minutes to hours, coma, fixed and dilated pupils, with bradycardia, central respiratory failure, and life-threatening within a short time. Other common causes of intracranial hemorrhage in infants and children are: 1) toxic encephalopathy; 2) hematologic disorders (thrombocytopenic purpura, remitting disorders, hemophilia, leukemia, etc.); 3) brain tumors; 4) cerebrovascular malformations; 5) late-onset K1 deficiency. Neonatology For newborns with high suspicion of intracranial hemorrhage, blood pressure, heart rate, respiration, consciousness, blood gas, ion, glucose, blood count, and clotting time must be closely monitored. Reduce moving and do early cranial ultrasound. Add MRI of the head if necessary.