Hmmm
How long has your practitioner been using Acupuncture because what you described sounds all wrong. Never, should Qi be drained from the head, thats dangerous, and one just doesn't do something like that as there is no need for it. Secondly, I think your practioners is dubious in their explanation of the experiences you had because they sound exactly like "Needle-Shock" symptoms which is a bad sign.
It altogether sounds like you had a bad treatment there and it may need some rectification too to undo what was done.
" Don't confuse yourself with someone who has something to say " - The Fall
" I do not like your tone/ It has ephemeral whingeing aspects " - The Fall
" There are twelve people in the world/ The rest are paste " - Mark E Smith