What's the cause of this painfully swollen eye?

Tim, eight years old, is brought in by his father after waking this morning with painful purplish-red swelling affecting both eyes.

Test your clinical know-how by taking the quiz below. If you select the wrong answer, have another go — you can try as many times as you like!


Dr Kate Kelso is a GP and medical editor at Australian Doctor.

  1. World J Pediatr 2018; Dec.
  2. BMJ