Overview
Chiari malformation is a structural defect in the brain where brain tissue extends into the spinal canal. It occurs when part of the skull is abnormally small or misshapen, pressing on the brain and forcing it downward. Symptoms can vary widely and may not appear until adolescence or adulthood. Severe cases may require surgery.
Symptoms
Headaches, often worsened by coughing or straining Neck pain Balance and coordination problems Muscle weakness or numbness Trouble swallowing or speaking Dizziness or vision problems Tinnitus (ringing in the ears) Sleep apnea in some cases
Causes
Congenital defects affecting skull and brain development Genetic mutations or inherited factors Spinal cord abnormalities or fluid buildup (syringomyelia) Trauma or injuries in rare cases
Diagnosis
Medical history and neurological examination MRI scan to view brain and spinal cord structure CT scan to evaluate skull shape Observation of cerebrospinal fluid flow abnormalities
Treatment
Monitoring mild or asymptomatic cases Pain management with medications Surgical decompression to relieve pressure and restore fluid flow Physical therapy for balance or coordination issues Treatment of associated conditions like syringomyelia
Complications
Progressive neurological deficits Syringomyelia (fluid-filled cyst in spinal cord) Chronic pain Hydrocephalus (fluid buildup in the brain) Respiratory problems if brainstem is affected
Prevention
There is no known way to prevent congenital Chiari malformation Early diagnosis and management of symptoms can prevent complications Regular follow-ups with a neurologist or neurosurgeon if diagnosed