This type of Chiari malformation has a higher mortality rate and may also cause neurological problems. This form of Chiari malformation is diagnosed at birth or with an ultrasound during pregnancy. In the most severe type of the condition, Chiari malformation type 3, a portion of the lower back part of the brain (cerebellum) or the brainstem extends through an opening in the back of the skull. It may also be diagnosed after birth or in early infancy. In myelomeningocele, the backbone and the spinal canal don't close properly before birth.Ĭhiari malformation type 2 is usually noted with ultrasound during pregnancy. The signs and symptoms can include those related to a form of spina bifida called myelomeningocele that nearly always accompanies Chiari malformation type 2. In Chiari malformation type 2, a greater amount of tissue extends into the spinal canal compared with that in Chiari malformation type 1. Breathing problems, such as central sleep apnea, which is when a person stops breathing during sleep.Curvature of the spine (scoliosis) related to spinal cord impairment.Ringing or buzzing in the ears (tinnitus).Less often, people with Chiari malformation may experience: Difficulty swallowing, sometimes accompanied by gagging, choking and vomiting.Numbness and tingling of the hands and feet.Poor hand coordination (fine motor skills).People with Chiari malformation type 1 can also experience: They generally occur after sudden coughing, sneezing or straining. Headaches, often severe, are the classic symptom of Chiari malformation. In Chiari malformation type 1, signs and symptoms usually appear during late childhood or adulthood. The more common types of Chiari malformation are:Īlthough these types are less serious than the rarer pediatric form, type 3, signs and symptoms still can be life disrupting. However, depending on the type and severity, Chiari malformation can cause a number of problems. Their condition is detected only when tests are performed for unrelated disorders. Many people with Chiari malformation have no signs or symptoms and don't need treatment.
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