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Category: Neurology

September 10, 2018


Chiari malformation is a rare condition which occurs as a result of a structural defect in the cerebellum – causing the brain tissue to protrude downward into the spinal canal thus preventing the cerebrospinal liquid from flowing normally. This condition causes the application of excess pressure on the cerebellum and the brain and can further lead to the development of fluid-filled cysts on the spinal cord as well as hydrocephalus – described as a fluid build-up in the brain. Additionally, it needs to be mentioned that this condition is also known as the herniation of the brain into the spinal canal.   It has been widely estimated that for every 1,000 births, there’s one Chiari malformation usually present amongst the general population. In addition, these malfunctions are usually developmental in nature which basically entails that they tend to develop as the body grows prior to birth. However, owing to the lack of symptoms in many individuals, treatment is delayed until they grow older. There are four distinct types of Chiari malformations classified in order of severity:  

  • Type 1
  • Type 2
  • Type 3
  • Type 4

  The term “Arnold-Chiari” is used to describe the Chiari type 2 malformation. Furthermore, more often than not, types 3 and 4 are rarely witnessed.


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Posted in Neurology