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The history described here is insufficient to diagnose a serious condition such as sleep paralysis.
Additional history and physical examination might be very helpful to rule out other common medical conditions that mostly arise as a result of abnormal sleep hygiene or psychological or emotional stress.
Additional testing with sleep study or a electromyography (EMG) might also be helpful.
You might consult your doctor or a neurologist for additional advice and proper treatment.
I hope this helps.