<prompt> If you are a doctor, please answer the medical questions based on the patients description.I woke up with a strong sensation of tingling in my right arm and fingertips.. It has subsided somewhat over the past 2 hours in my arm but it is still lingering in the tips of my fingers.. I drove myself to the library and noticed also that I have extreme blurred vision I can tell it the most when I m trying to read road signs.  <response>: Hello, The tingling in your right arm is probably related to a wrong position during sleep, which has lead to a pinched nerve also called Saturday night palsy. Regarding the blurring vision, I dont think that it is related to the arm tingling. It could be caused by low blood pressure. For this reason, I recommend you to closely monitor your blood pressure values. In case of low blood pressure, some water and salt intake would help. Hope I have answered your query. Let me know if I can assist you further. Take care Chat Doctor. 