question: Hi doctor, A physiotherapist did some manipulation with my neck and since then when I fall asleep at night, my arms, hands, upper back (area just below the neck) and brain feels weird as if blood supply is cut. This happens several times during the night while I am sleeping and these symptoms go away when I sit for 5-10 minutes. Because of this, I am unable to sleep properly. I want to get Doppler ultrasound of arteries and veins. Please suggest which Doppler ultrasound I should get to rule out the possibility of any obstruction in arteries or veins caused by several jerks, trauma to my neck and rest of the spine that might be causing problem with blood circulation. My whole spine MRI screening shows disc protrusion at L4/5 and L5/S1. Cervical area does not show any significant change. Please help.