i know this may sound strange but sometimes when i go to sleep i wake up and the side and the back of my head is completely numb ,this numbness will sometimes cause me to wake from my sleep it is that bad . i have as you know from my past post a lesion(angioma) on my left temporal lobe which they are wanting to do surgery for they are schedualing video monitoring to see where the seizures(epilepsy) are comming ( more than likely the lesion but they want to be sure!!! ) from also they spoke of a angiogram .the reason for my question is this numbness has accured off and on for years i just thought maybe i was sleeping wrong ,is there anything you can tell me about this symptom and should i be concerned and mention it to my neuroligist,also if you have any info on the test i mentioned it would help a great deal ,and could you tell me a little about mapping it will also be done prior to surgery, thank you so much for your help ,god bless wishing you well !!!!