My brain feels like it is rattling in my head.... I feel like I'm in a fog. I also have internal tremors that make me feel like my insides are vibrating. I had an appointment with my Neurologist last week. He had no answer....could be the Parkinson's, could be the meds. That doesn't help how I feel. He increased my Requip XL to 8 mg daily from 6, and I take 4 Carbidopa/Levodopa 25/100 tablets daily. He wants me to try the increase in Requip XL for 2 weeks, then check back in with him. He may, at that time change the Carbidopa/Levodopa to Stalevo. I feel like I'm going crazy. Is it me or is it the meds? Anyone else experienced this?