Final answer:
Erythromycin may cause idiopathic intracranial hypertension when taken orally.
Step-by-step explanation:
Erythromycin is the medication that may cause idiopathic intracranial hypertension when taken orally to treat meibomian gland dysfunction. Idiopathic intracranial hypertension is a condition characterized by increased pressure within the skull that can lead to various symptoms such as headaches and vision changes.