Last night when ever i stood up left the back of my head jammed and ears blocked.. had constant shivering in left arm and felt pins and needles in body..with body ache shortness of breath at times..chills..heaviness in back of head still there.. weakness in body... What could cause all this. I work in night shifts. Doc told me to take Ricofast plus but shivering didnt stop in left arm whole night. The head seems too heavy the back side. Is it a kind of stroke or could be due to stress and anxiety. Please help. The head is still like a big stone is kept at the back side. Pricking sensation in hands.