I have recently picked up a nasty meth habit as I am an addict. I started having problems in my right hand, numbness, tingling, cold sensations,and weakness. My question is this caused by meth or can it have been caused by crawfish toxins? The reason I ask this is, I had started working in a crawfish plant handling live crawfish constantly and I hadn t been using that much meth maybe a gram a week. Any thoughts?