Hello doctor,I have noticed recently that my left arm seems to be raised automatically. This is also about my waist height. I saw a neurologist three years ago, and everything was fine. I also had a brain MRI in 2018 because I was having problems with gait, sometimes need to put my hand on the wall when brushing hair or teeth. My orthopedic doctor found that have a bit of cervical stenosis in my neck C3 and C4.I also hold my cell phone in this hand for many hours while typing. Sometimes when I try to keep three things in my left side, it is a kind of clamps up, and I forget what I am holding (about five yearslike this). Intake blood pressure medicines, and I take a large amount of sleeping pill called Zolpidem 20 mg per day. I am finding it a bit difficult to work sometimes and also suffer from a sore neck sometimes.
Hello, Welcome to Chat Doctor forum. The clumsy hand and gait difficulties could be related to the cervical spine stenosis. Anyway, I would recommend performing a brain MRI and a physical, neurological exam by your neurologist, before coming to this conclusion. I would also recommend stop taking Zolpidem gradually. This  ChatDoctor.  Instead, I would recommend switching to Mirtazapine, which can help regulate your sleep without the adverse effects of Zolpidem. I hope you will find this answer helpful. I remain at your disposal for any further questions whenever you need. 