About three or so months ago I began having trouble remembering words in the middle of sentences. I've always been really good with words (I'm a writer), and so it's somewhat unusual. Since then things have gotten a bit worse - I've forgotten how to spell even simple words, and I make typos in most words. As well as that I've had extreme fatigue, weakness in my hands, particularly my right one, and lose my balance quite often. I can't stay upright if I move with my eyes closed, though standing still isn't so bad, just a bit of swaying. My fingers shake sometimes, and I can feel a sort of internal vibration, but otherwise it's nothing noticeable to other people.
I'm normally very active and my mind is pretty sharp normally, so this is a little bit strange for me. I'm 28 and have an occasional headache, but nothing frequent.