Which is not a common cause of hypersensitivity pneumonitis?

Correct Answer: D

Rationale: Dust mites are not a common cause of hypersensitivity pneumonitis, unlike moldy hay, bird droppings, humidifiers, and air conditioners.

Correct Answer: B

Rationale: Hyperinsulinism is a common cause of persistent neonatal hypoglycemia due to excessive insulin production. It requires medical management with dextrose infusions or medications like diazoxide to prevent neurodevelopmental impairment.

Correct Answer: A

Rationale: Adenovirus is the most common viral cause of post-bronchiolitis obliterans, a chronic lung disease following severe bronchiolitis.

Correct Answer: C

Rationale: Wilson's disease is an autosomal recessive disorder characterized by defective copper excretion, leading to high urinary copper and low ceruloplasmin levels.

Correct Answer: D

Rationale: Harlequin color change is a normal physiological phenomenon observed in newborns