Q. A 32-year-old woman comes to the emergency department for severe left-sided ear pain and facial weakness for two days. She says that her symptoms started with ear pain which is intense, continuous, and burning in nature. She has taken NSAIDs for pain relief and slept. But after waking up from bed, she observed an unusual weakness on the left side of her face and is not able to close her eye completely on that affected side. She denies any trauma. Her medical history shows that she has been a known Type I diabetic for the past 15 years and is on regular treatment. Her temperature is 98.6°F (37°C), heart rate is 90/min, respiratory rate is 14/minute and BP is 128/80 mm of Hg. Physical examination shows the weakness of the left facial muscles. When asked to close the eyes, the left eye moves upwards and slightly outwards. Left ear examination shows an erythematous vesicular rash extending from the concha to the external auditory meatus. Hearing, and taste are unaffected. Rest of the examination is unremarkable. What is the next best step in management for this patient?