Problem: A patient with a history of generalized anxiety disorder presents to the ER with symptoms of muscle tightness, twitching, shivering, hyperthermia, and tachycardia. This patient is currently taking Tramadol for chronic pain, and an SSRI for GAD. What would be the most likely diagnosis for this patient? a. Discontinuation Syndrome b. Serotonin Syndrome c. CNS Depression d. Respiratory Depression