Hi,To start I'd like to say that I have a very extensive history of health anxiety. Since I was a young child I've always been worried about my health and always thought I was going to die from one problem or another. For about 3 years straight I was convinced that I had a brain tumor. Moving past that, a few months ago I went researching online (about brain tumors, funnily enough) and came across ALS. I began to search the symptoms and the disease itself, and began to realize that at this point, I'd been getting relatively unnoticible body twitches for some time (maybe a year or so) without ever considering them to be anything serious. After much worry, I ended up having a panic attack one night (many more followed) and from that point on I haven't felt the same. The twitches have worsened significantly body-wide (they aren't always body wide) and my worry is a constant weight on my shoulders every day. It's gotten to the point where living my own life is a nightmare because of my worries about ALS. I even made a thread similar to this on the ALS forums asking about my symptoms. So I've decided to come here, to ask for some more advice.I'm a 19 year old male, and very recently my twitching (which was previously body-wide and relatively rare (probably 20-40 twitches per day)) has turned into regular body-wide twitching, as well as for the past few weeks, one very focal and constant (essentially 24/7) twitch in my left calf. My right calf also likes to join in on this twitching, however my left calf is essentially going non-stop unless I'm moving it. The twitches there are all different; some are big thumping twitches of a whole part of the calf, some are little wormy feelings on the back of the calf muscle, whereas the most are just tiny little movements within the side of the muscle which are relatively rhythmic and very worrisome. Sometimes the twitch in my left calf will turn into a type of "vibrating" sensation, where the whole calf and what feels like the whole leg will essentially be vibrating, however this sensation cannot be felt from the outside with my hand like the random twitches can and is very consistent, ususally lasting for a few hours before going back to the regular old twitching. I read somewhere that these small and constant focal twitches are essentially signs of ALS (as opposed to the larger, more body-wide ones which are typically associated with BFS), which worried me even further and got me into the state where I am now; worried for my life. I went to see a doctor about my twitches, who I thought was extremely cold and treated me poorly, and although ordering me a blood test, I'm going to see a new doctor this Thursday who I will be talking to extensively, and will hopefully refer me to a neurologist.The left calf twitch is very strange in nature; it's almost constant but I feel as if it's constantly representing itself in different ways; sometimes I will have a kind of worms-under-skin feeling right up the top of the calf behind me knee or the middle, sometimes it will be a little tick down on the left side of the calf. Sometimes the entire calf will just be very slightly vibrating. There are very short periods of time sometimes (usually at night before bed) where the twitches in my left calf specifically are unnoticible, however I'm not sure if I could attribute this to just having less energy and thus the muscle cannot produce as strong twitches, so they calm down to a point where they are very minimal and unnoticible. This isn't to say that before bed and when I'm in bed the twitches are gone; they are still very much there in the left calf specifically, just usually less noticible unless I put all my effort into focusing on them. This left calf twitch has been constant for a period of about 2-3 weeks now (or noticible for this period of time).So I've come here to question those who have BFS to see if my symptoms are at all similar to BFS; in my mind I have a 50/50 chance of this left calf twitch being a focal twitch from BFS or the beginnings of ALS. I'm extremely worried and anything else I do in my life is consumed by the thoughts of myself having ALS. I do not have any obvious objective weakness, however I have noticed some peculiar things, such as my left leg being quite shaky after I've done some physical exercise when I stand on it, however any sort of strength tests I do on my calves or quads reveal that the absolute strength seems almost identical to that of my right leg. I've read that in 6.7% of cases of ALS, twitching is the first symptom noticed, which is the main thing that has me worried.If anyone here could offer some advice; can BFS twitches be both body-wide, as well as constant and only in one place (left calf)? Is this common with BFS?Any sort of help would be so so appreciated. Hopefully once I see my doctor I can get a referral to a neurologist and at least end this questioning as to whether or not I have ALS or BFS.