Impulsive destructive behavior is predominantly seen in children with conduct disorder and adults with emotional instability. Childhood conduct disorders primarily include aggressive and rebellious behaviors. Children with conduct disorders are usually unable to form normal relationships with others, have superficial partnerships, are highly self-centered and egoistic, and lack guilt, shame, empathy, and responsibility. So what are the laboratory tests for impulse destruction? The following is to tell you a. Cranial ultrasonography (1) The quality of the immediate ultrasound image of the brain is greatly influenced by the skull. So far, the application of ultrasound imaging examination is mainly limited to infants and newborns within 2 years of age whose fontanelles have not yet closed. (2) Transcranial instant ultrasound may have some value for the diagnosis and interventional treatment of brain abscesses and intracranial occupying lesions in adolescents and some individuals. (3) Color ultrasound and transcranial Doppler TCD are used to examine the carotid and vertebral arteries and their lesions and to detect intracranial arterial blood flow. It is widely used to examine cranial vascular malformation and arterial stenosis and other disorders. 1.CT examination of the skull and brain is the most important diagnostic imaging method in head trauma, with high sensitivity to fresh hemorrhage and can show important lesions such as edema and increased intracranial pressure secondary to brain herniation, and is also suitable for diagnosing skull fractures, especially depressed fractures and skull base fractures. 2.It can clearly show the number of intracranial tumor sites, size, outline density, intra-tumor hemorrhage, calcification and the degree of diffusion with the possibility of qualitative diagnosis up to 70%. 3.The diagnosis of cerebrovascular disease is accurate and helps to determine the treatment plan. 4.For craniocerebral injury, it can distinguish the size, shape, scope and number of hematoma and its adjacent brain tissue compression. The diagnostic accuracy rate can reach more than 98%, and it can be used as a routine examination of craniocerebral injury.