What happens to you when crystal meth is no longer in your system?

It takes up to 12 hours for crystal meth to exit your blood stream.
When you come "down" from being "high" caused by crystal meth it could cause someone to:
-throw up
-skin turns a tint yellow
-lose weight
-hair loss
-hallucinate that there is bugs on you
-not able to fall asleep
-be depressed
-short / long term memory loss
-bone loss