What would cause one's hand to become numb?

I started getting a numb hand about 2 weeks ago. At first it was just every 2 days or so. The numbness would last for about an hour. The numbness slowing esculated and now my hand is permanently numb. My doctor said it is a pinched nerve as I have a sore neck. He didn’t even examine me or ask questions. Do you think this could cause it?