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What’s the cause of her pink blood?

A six-month-old female presents with difficulty breathing. On routine blood sampling, her blood was noted to be pink.

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This has been present since birth

An 11-year-old male with a history of precocious puberty is found to have this hypopigmented macule on examination. Is there a connection?

What’s in your differential?

Quiz: What condition is revealed by this presentation?

A six-year-old female with a two-week history of daily fevers presents with a linear macular rash. Her mother says the rash appears in areas where her daughter has scratched herself. It is most noticeable when she is febrile. Examination reveals swollen knee joints and lymphadenopathy. What’s the cause?

  • Rheumatic fever
  • Henoch-Schönlein purpura
  • Systemic juvenile idiopathic arthritis
  • Dermographism

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These cases were originally published in the July 27, 2019 edition of The Differential for Pediatrics newsletter. The Differential is our premium newsletter which rounds up the most interesting and useful clinical cases based on your specialty. To sign up for this email in any of its 10 specialty-specific editions, download the Figure 1 app and update your email preferences.