Full Body muscle twitching and tremors

I'd like to preface with saying I'd really appreciate if everyone read thouroughly through everything I'm about to post before responding as it is all important and relevant. Thanks.

I'm a 25 year old male. For the past nearly 3 months (since the beginning of April) I've been experiencing weird neurological issues. The most notable are tremors and twitches throughout my body.

The tremors are postural and kinetic. They are similar to what one might see in "essential tremors". However, this seems strange to me as they started on very suddenly and I have no family history of tremors. They are also throughout almost my entire body. Most notable in my thumbs, but also can be seen in my other fingers and entire hand on movement and certain positions. Thumbs are definitely the worst, they don't tremor at rest but if I move them a certain way they can be rather violent at points going back and forth with the speed of a hummingbird. Sometimes this happens while I'm texting (especially while I'm physically exhausted i.e. gym). They can also be seen in my face, legs, toes, and somewhat voice though all mildly and only when moving them in a certain way and holding that position (for the first 3). My abs and core will sometimes tremble too when doing exercises at the gym with heavy weight and I also feel a trembly/twitchy feeling rippling throughout my body while stretching (like when I wake up in the morning in bed) or yawning.

Now on top of this I also have had full body twitches which started at the SAME time. These have gotten progressively worse, being only occasional at first, they've become a much more daily and constant experience now. These have come in and out of every area I can think of (face, arms, legs, feet, hands, back, calves, shoulders). Sometimes they're big and violent and other times very subtle like little worms in my skin. Lately they've been most notable in my feet and calves (though not exclusively by any means). Sometimes after a walk my butt will get a lot of them going off. Usually while I'm moving around I don't notice or feel them, but I do as soon as I rest.

Other than this I've had small brief periods of numbness most notably in my legs after a long walk. However it is usually very light, something like a tingly feeling. It's happened in other places as well but nothing too serious compared to my other symptoms, but still worth noting. No real signicant pain other than occasional dull achiness (but nothing too weird as I lift weights 5-6x a week).

Now this leaves me with where I'm at so far. I have seen a neurologist already. She ran some bloodwork. I had low-normal vitamin D (35 on a scale of 30-100) and low iron/ferritin (49/19 on scales of ~50-220 and ~30-300 respectively). I have since supplemented iron and vitamin D. I've also been supplementing magnesium as I've seen low magnesium causing many of the same symptoms but to no avail. I've tried B12 as well but my B12 is now plenty high with low MMA and homocysteine so very unlikely deficient in that. Since starting the iron and vit D I don't seem to be making any improvement unfortunately although its only been 2.5 weeks. Other notable things in my bloodwork were a slightly elevated zinc and b6 but only barely out of range. I have cut out b6 and zinc supplements since. My free t4 was also borderline low (0.87) but TSH was normal at 1.4. I may have more thyroid testing done just to see if there is a problem there.

Honestly I'm clueless. I don't know what could cause all these sudden symptoms. I have no weakness whatsoever and widespread twitching so no ALS. My tremors aren't resting and no other symptoms of parkinsons. MS doesn't seem likely either given the symptoms and the full body display of them. If anyone has any idea to point me in the right direction I'd very much appreciate it. I am seeing a GP soon to run more bloodwork (any specific tests I should ask for?) and then a movement specialist after. I am clueless due to the full body sudden onset of this. It doesn't seem to fit anything I've found in my extensive time researching on the internet. I'm taking klonopin right now once daily which helps a bit, but far from totally relieves the symptoms. I need to figure out what is causing this.

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