Scalp spasms?

I think that’s one I’ve missed out on so it’s difficult to understand the sensation. Could this be what others call ‘brain zaps’ or does it more resemble the pressure from a tension type headache but only lasts a few seconds and moves around the head? Sort of flooding in and out?

As you say there’s no much info about. Not answering to that exact description. Guess you read this?
Success Stories Using Botox?