{
  "topic": "cold-stimulus headache",
  "language": "vi",
  "required_concepts": [
    "relatable cold food/drink forehead-pain opening",
    "counterintuitive reframe",
    "cold-stimulus headache classification",
    "palate or posterior pharynx cold exposure",
    "trigeminal afferent pathway",
    "referred pain and brain localization",
    "vascular observation presented as incomplete mechanism",
    "migraine susceptibility association with caution",
    "tooth sensitivity distinction",
    "sinus and migraine distinction",
    "low-risk slower intake and palate warming",
    "brief typical episode usually benign",
    "urgent headache red flags",
    "closing echo: brain is not freezing"
  ],
  "evidence_rules": {
    "minimum_named_sources": 3,
    "ICHD-3_is_classification_not_researcher": true,
    "bind_each_source_to_local_claim": true,
    "distinguish_observation_from_mechanism": true
  },
  "forbidden_claims": [
    "brain tissue literally freezes",
    "one vascular mechanism is conclusively proven",
    "cold-stimulus headache diagnoses migraine",
    "sinus disease is the default cause",
    "unsafe breath-holding or medication advice"
  ]
}