{
  "abstract": "The hand is famously useful in diagnosis. Think splinter haemorrhages, finger clubbing, or palmar erythema. Hyperpigmentation of the knuckles should be added to the list of things to look for. A 14 year old vegetarian girl with a year’s history of progressive pigmentation over the interphalangeal joints of her hands and feet turned out to be vitamin B12 deficient, despite an absence of gastrointestinal or neurological symptoms. Treatment with oral vitamin B12 produced a rapid improvement (Br J Dermatol doi:10.1093/bjd/ljag081)",
  "authors": [
    {
      "affiliations": [],
      "name": "British Medical Journal Publishing Group"
    }
  ],
  "title": "Ecopipam for Tourette’s syndrome . . . and other stories",
  "uid": "c72bd78e-3e53-5f1d-b10c-39fefefc5057"
}