Chiari malformation type I doesn’t show up until adulthood usually. My sister was twenty-two when she found out she had it.
She saw a doctor because she had been having problems with balance and coordination. She also had started getting headaches. She felt dizzy most of the time, and her eyes seemed to wander.
While the doctor was listening to her describe her symptoms, he noticed her downbeat nystagmus. He diagnosed her with the malformation, and he recommended surgery to ease her symptoms.
The surgeon took out a section of bone from her skull to relieve the pressure on the brain. He opened the brain covering and sewed a patch there to enlarge it and give her brain more room.