So another use brought this up and reminded me that i experience this phenomenon as well. When i started doing magic during the Summer of 2013 i did a lot of moon related spells at night. This is back when i was still naive on what magic could and couldn't do (I watch to much TV....)
I started getting really scared.... so i burned a lot of the spells that i did and prayed for forgiveness and what not. Well the next night when i was sleeping i got this really ANNOYING feeling like ants were crawling on my scalp and forehead traveling down my back and let me tell you it didn't feel like 10 or 20 it felt like a STAMPEDE. I was so uncomfortable i couldn't even get to sleep. It was hard to get up and i couldn't move but managed to move to the couch for the night. So then i started seeing really BIG pop in my face number syncs and i started seeing flashy lights when i was sleeping.
This tingly feeling is still happening! It's not as bad it happens during the day but it usually happens the most at night and it bothers me from sleeping but no the point where it's impossible like before. I already asked my teacher about this and i think what she said was completely incorrect!