Chiari malformation is a medical condition that can be either genetic or acquired. It occurs when there is a structural abnormality in the base of the skull and the cerebellum, resulting in the cerebellum protruding into the upper spinal canal. This condition affects approximately one in 1,000 individuals, although many cases are asymptomatic.
Understanding the Development of Chiari Malformation
Chiari malformations occur as a result of an abnormality in the formation of the skull, leading to its misshape or smaller size than average. This structural defect can lead to various symptoms that arise due to increased pressure on the brain or the obstruction of the flow of cerebral spinal fluid. This fluid serves the crucial functions of cushioning the brain, circulating essential chemicals and nutrients, and removing waste products from this vital organ.
Causes of Chiari Malformation
Chiari malformation can be caused by a range of factors. The primary form of Chiari malformation, which is the most common, is typically present at birth and is caused by genetic mutations or a deficiency in essential vitamins and minerals during fetal development. On the other hand, acquired secondary forms of Chiari malformation can develop later in life due to various reasons such as infection, disease, surgery resulting in excessive loss of spinal fluid, or trauma. Although less common, these secondary forms can also contribute to the development of Chiari malformation.