Case 504 · ICHD-3 7.7
7.7 Headache attributed to Chiari malformation type I (CM1)
- Origin
- Synthetic
- Language
- English — also available in German
- Contributed by
- Imported case — HeadAI synthetic vignettes (de Andrade JBC, da Silva Costa TB, Vasconcelos JL, Lopes TLM, Balsells MD, Cristofolini VL, Querobin SO, Filho FMR. Validation of an AI-based platform for structured diagnosis of headache disorders using ICHD-3 criteria. BMC Neurology 25, 489 (2025). doi:10.1186/s12883-025-04473-1. Dataset: Andrade J. Head.AI Platform. Mendeley Data, V2 (2025). doi:10.17632/4fms6cw2s5.2)
Anamnesis
Identification: Gender/Age: Male, 19 years
Medical History: No previous comorbidities
Family History: Mother diagnosed with CM1 (asymptomatic)
History of Present Illness (HPI): Main symptom: Occipital headache for 4 months
Pain characteristics:
Location: Bilateral suboccipital with cervical radiation
Character: Throbbing and pressing
Intensity: 6-7/10
Duration: 15-30 minutes, 2-3 episodes weekly
Triggers: Physical exertion, laughter, and cervical flexion
Improvement: Rest in supine position
Associated symptoms:
Occasional pulsatile tinnitus
Mild dysphagia for solids
No motor or sensory deficits
Physical/Neurological Examination:
General: Well-nourished, normotensive
Neurological:
Mild horizontal nystagmus
Brisk reflexes in the lower limbs
Positive Romberg's test
No papilledema or focal deficits
Complementary Examinations:
Magnetic Resonance Imaging of the Brain and Cervical Spine:
Tonsillar herniation of 7 mm
Mild distortion of the fourth ventricle
Absence of syringomyelia
MR Angiography: Excludes cerebral venous thrombosis
Report this case — e.g. suspected re-identification risk.