Electrical current

Electrical current in the back of head going down the back? It’s driving me crazy. This part feels more like my CNS has gone haywire but I have no idea. Back of neck and head buzz and have severe pressure that causes nerve pain in my head (usually burning or sharp and a feeling of pulsating occipital nerves) and then it goes down my back and my entire back buzzes but not as badly as my head and neck. It’s like pulsating buzzing pressure! It’s really hard to stand this! The head symptoms are my worst ones as they make me unable to function. The pressure is so severe I have trouble doing anything other than lying down. MRI was clear.