MRCP2-3515
A 35-year-old man comes to the Neurology Clinic for evaluation. He has been experiencing severe headaches every afternoon and evening, which are located in the frontal, like a band around his head and last for 1-2 hours each time. He has been taking 2g of Acetaminophen and 30 mg of Codeine phosphate four times a day, and has attempted to stop taking the medication, but the headaches return when he does. His neurological examination is normal, and his CT and MRI scans, as well as a variety of screening blood tests, have all come back normal.
What is the most appropriate next step?