A 2-year-old boy is brought to ED by his parents with a harsh barking cough and a loud noise on inspiration heard when the child is crying. On further questioning, they tell you he has had coryzal symptoms over the past 2 – 3 days. On examination he has normal air entry, no signs of respiratory distress and his oxygen saturations are > 98%.
A. What is the most likely diagnosis in this patient? (1 mark)
B. What are the differential diagnosis? (1 mark)
C. Give one drug (including dose and route) should be given to this patient? (1 mark)