What is it?

Arnold-Chiari syndrome (also known as Chiari malformation) is a condition in which brain tissue extends into the spinal canal. This phenomenon occurs when part of the skull is smaller than than usual, pressing on the brain and forcing it downward.

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Additional names

This group contains additional names:
- Chiari malformation

Signs & symptoms

Most common symptoms of Chiari malformation include:
- Neck pain
- Unsteady gait
- Poor hand coordination
- Numbness of the limbs
- Dizziness


To diagnose Arnold-Chiari syndrome, based on your medical history, symptoms, and physical examination, your healthcare provider may choose to refer you to further tests:
- Magnetic resonance imaging (MRI) - An MRI is often used to diagnose Arnold-Chiari syndrome.
Computerized tomography (CT) scan - a CT scan can help to reveal brain tumors, brain damage, bone and blood vessel problems


Treatment of this Chiari malformation depends on your symptoms and the severity of the disease. In most of the cases the treatment includes a surgery to reduce the pressure in the spinal canal.

☝️ This is not a substitute for professional medical advice. Please consult with your physician before making any medical decision.

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