The skull is a relatively hard bone outside the brain that protects the internal tissues of the brain as well as the nerves, but it is still prone to skull loss when it is injured by violent external forces, such as a traffic accident or a fall from a high speed. Surgery is an effective way to repair cranial defects, not every patient will choose surgery, what is the danger of not repairing cranial defects? 1, re-bleeding If a patient produces a large cranial defect and causes secondary head injury during movement, the blood vessels inside the brain are prone to rupture due to trauma, so local bleeding causes patients to become nauseous, vomit, dizzy, or even fall into coma, and cranial repair surgery can reduce this risk. 2.Language and behavior disorders People will master various skills after birth through learning, such as speaking skills or writing skills, etc. Patients with cranial defects are prone to blood circulation problems inside the brain due to pressure, so they have learning disabilities, which are manifested as unclear spelling and trembling hands. 3.Psychological problems Most people have a complete skull covering their head. After the skull defect, patients will have psychological problems because of the collapse or expansion of the brain, such as low self-esteem because they feel different from normal people. If the psychological problems are not controlled in time, it is easy to develop into anxiety or depression. 4, personality changes The brain is a very precise system, once the brain of patients with cranial defects is affected, it is easy to produce neurological problems, so it leads to personality changes, such as from a quiet personality becomes irritable, long-term in a state of fear or imagination, resulting in its inability to socialize normally. Cranial defects bring serious harm to patients, so it is important to have cranial repair in time. Physical health is an important condition to ensure the quality of life, and every patient should actively pay attention to their physical changes and solve their physical diseases as early as possible. Skull repair should be performed in a regular hospital by choosing the appropriate repair material.