I'm 18 and sometimes wake up with a numbness in my head, it feels like a dead arm or hand would. worried because no one i know has experienced this?

TransientParesthesia: A sensation of pricking, tingling, or creeping on the skin. Transient type is very common. Paresthesias that do not persist are unlikely to be associated with a serious medical problem. Most people have experienced a transient type of paresthesia they describe as "my leg falls asleep" or "tingling sensation on my face". Rec.: see your pcp for evaluation.