Involuntary muscle tensing & contorting--dystonia or ? Help

I often involuntarily tense up and sometimes contort my muscles into painful positions—for example, arching my back deeply or sharply pointing my foot/toes. This occurs randomly, and many times every day. It happens in 1-3 areas of my body at a time, in varying combinations—including my jaws (clenching), tongue, back, hands, arms, buttocks, legs and feet. I don't realize I'm doing it...click here to continue

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