A court expert is a person appointed to the case when it is necessary to establish the circumstances that require special knowledge. It concerns technical, scientific, medical or artistic expertise that is needed to better understand a given fact or evidence in the case.For example, it is necessary to obtain an opinion an explanation from a doctor on what health damage a victim of crime suffered and howthey were wounded. In some cases, it is necessary to appoint a psychologist or psychiatrist who will outline the psychological portrait of the accused and assess their mental state. The same refers to e.g. acomputer expertwho will indicate how a particular computer or software were used to commit a crime. It is in such cases that a doctor, a psychologist or a computer specialist will use their expertise to help you better understand the circumstances of the crime.