Over the past couple of months, I've noticed that my legs, and more recently my arms, are shaky and feel weak. My legs bother me the most...often when I'm walking (or just standing still) they feel shaky and like they're not going to hold me up. I've also noticed at the gym that my arms feel shaky (and sometimes are actually visibly shaking) during and after lifting weights (like chest or tricep exercises) and then heavy afterwards, although I'm able to lift as much weight as before. However, I've also been noticing random twitches in various muscles (arms, back, legs, butt), and I also get a sensation like electrical impulses in my butt and legs after walking or exercising. I have had this sensation after walking and exercise for many years (as long as I can remember, at least 15 I would guess), although it seems worse lately. I had these weird sensations in my legs a few months ago (like a chill running down them that would come on every once in a while), and had a brain and spinal MRI, both of which were normal, so I know I (most likely) don't have MS. And those sensations have gone away. However, I'm really scared that the shakiness and weakness could be ALS or something else scary. I know I'm young for ALS (32), but I also know it's possible to get it at this age. I'm trying to convince myself it's anxiety, and I've searched the posts on here and it seems like other people have had the weak feeling like your legs won't hold you up, but the shaking is really scaring me. Especially since it isn't just a feeling of shakiness, but actual shaking. Could this somehow be anxiety as well? In general I notice the feelings more when I'm alone and not distracted by people or some activity (and can go long periods without noticing anything when I'm busy), and my stress and anxiety levels have probably been higher than usual lately since I moved across the country last week and started a new job. Although I've been getting the shakiness on and off for a couple of months (first noticed it in June, then again in mid-August), it's gotten much worse over the past 2-3 weeks. I've had a ton of anxiety symptoms in the past (head pain, buzzing in feet, tingling, feeling like my whole body was weak (although not shaky), stomach pain and cramps, night sweats, heart palpitations, lightheadedness, breathing problems, etc), but every time I get a new one I can't help but think it must be something bad. Has anyone had this before and it turned out to be anxiety?
Thanks for your help.