{
  "abstract": "A 12-year-old girl of Asian genetic ancestry was referred with arthralgia and episodic colour changes affecting her hands and feet. She described her digits turning grey then blue, with painful paraesthesia, particularly in cold environments. She also had a history of intermittent periorbital swelling. On examination, there was pitting of several fingertips and restriction of hips and knees bilaterally. Cardiovascular and respiratory examinations were unremarkable, with no peripheral oedema and normal peripheral pulses.",
  "authors": [
    {
      "affiliations": [
        "Department of Paediatric Rheumatology, Royal Hospital for Children, Glasgow, UK"
      ],
      "name": "Elizabeth Jane Twynam-Perkins"
    },
    {
      "affiliations": [
        "Department of Paediatric Rheumatology, Royal Hospital for Children, Glasgow, UK"
      ],
      "name": "Kirsty McLellan"
    },
    {
      "affiliations": [
        "Department of Paediatric Rheumatology, Royal Hospital for Children and Young People, Edinburgh, UK"
      ],
      "name": "Catriona Anderson"
    },
    {
      "affiliations": [
        "Department of Paediatric Rheumatology, Royal Hospital for Children, Glasgow, UK"
      ],
      "name": "Neil Martin"
    }
  ],
  "title": "Twelve-year-old girl with colour changes to extremities",
  "uid": "35be60b2-5b38-58be-8aaa-3ea7bbdce73a"
}