{
  "abstract": "A previously healthy 15-year-old boy presented with erythema migrans, a characteristic skin rash that often appears as the earliest manifestation of Lyme disease (LD) (online supplemental figure S1). He was prescribed doxycycline 2 mg/kg orally two times a day for 14 days. Subsequently, he noticed painless dark stains on all his fingernails (figure 1 and online supplemental figure S2).SP110.1136/archdischild-2025-330043.supp1Supplementary data",
  "authors": [
    {
      "affiliations": [
        "Division of Infectious Diseases and Hospital Epidemiology, University Children’s Hospital Zurich, Zurich, Switzerland"
      ],
      "name": "Patrick M Meyer Sauteur"
    },
    {
      "affiliations": [
        "Division of Infectious Diseases and Hospital Epidemiology, University Children’s Hospital Zurich, Zurich, Switzerland"
      ],
      "name": "Beat M Greiter"
    },
    {
      "affiliations": [
        "Emergency Department, University Children’s Hospital Zurich, Zurich, Switzerland"
      ],
      "name": "Veronika Volkmann"
    },
    {
      "affiliations": [
        "Emergency Department, University Children’s Hospital Zurich, Zurich, Switzerland"
      ],
      "name": "Semjon Sidorov"
    },
    {
      "affiliations": [
        "Emergency Department, University Children’s Hospital Zurich, Zurich, Switzerland"
      ],
      "name": "Michelle Seiler"
    },
    {
      "affiliations": [
        "Pediatric Skin Center, Department of Dermatology, University Children’s Hospital Zurich, Zurich, Switzerland"
      ],
      "name": "Agnes Schwieger-Briel"
    }
  ],
  "title": "Doxycycline’s stains",
  "uid": "5b8a1b74-03e3-543d-8e16-a6286ba33259"
}