So this is going to be very long, sorry, but I want to make sure I can explain everything thourougly. I'm 25 and Starting around 8-10 months ago, I have been experiencing a number of debilitating symptoms and no doctor I've seen can seem to figure out what the problem is. It stated out as pain (muscle soreness, achy joints, sometimes sharper pains mainly in my knees and elbows). A few months after that, I started getting this vibrating sensation that moves around but is most often in my arms or legs. It almost feels like my muscles are quivering or twitching really rapidly, but it's not visible, it feels internal. The only visible shaking is a slight tremor in my hands. This feeling seems to be worse in the morning, along with a feeling of intense agitation or restlessness that only goes away after a few hours. It's really unpleasant, sometimes I'm afraid to go to sleep at night because of how I know I will feel when I wake up. The only thing that helps a bit is Xanax, but it doesn't make it go away, just makes it less intense and I don't want to get addicted to it.
A little while after that started, I began to have these episodes of extreme fatigue. It feels like every bit of energy has drained from my body and even simple actions seem to require an immense amount of effort. It's like my muscles get fatigued really quickly, sometimes I can only take a few steps before my leg muscles start burning and become very hard to move. Even getting up to go to the bathroom can leave me exhausted and breathing really hard, like I just ran a marathon or something. These episodes can last minutes, hours, even days.
I've had various other symptoms too, like nausea, abdominal pain, temperature fluctuations (usually I get really cold, sometimes shivering, but I get really hot at times too), excessive sweating (my hands and armpits become absolutely drenched, even when I'm not hot or doing any sort of activity), brain fog (like all my thoughts are slowed down and I can't concentrate or focus, makes it hard to even form a coherent sentence sometimes), heart palpitations (pounding in various parts of my body, mostly), chronic headaches, dizziness/lightheadedness (mostly when standing), partial numbness in my limbs. Whew, I think that's everything.
I've had all of the obvious tests done (Lupus, Lyme, B12 deficiency, anemia, thyroid function, adrenal function) and have seen my PCP, a internist, rheumatologist, endocronologist, and neurologist and none of them had any answers. I don't know if MS is a possibility, I had a brain MRI when my symptoms were first starting (looking for a pituitary adenoma, not MS) and it was normal. I live near Mayo Clinic and have tried to get in there, but was turned down both times. Some doctors have said it's just anxiety or stress, and i don't know, maybe some of the symptoms are, but I know that something else is going on here. I'm getting really desparate and don't know what to do at this point. Any help or suggestions would be greatly appreciated.