this started when i was pregnant last year. i have numbness in my hand when i use hair dyer, when i drive, when i write, and when i sleep at night laying down my whole hand goes numb and it hurts up to my elbow. my dr said it would go away after i have baby but a year later it is worse. my dr gave me the splint to wear and it feels much better. monday i am doing the merve conduction study. is this cts?