What occurs when a diabetic consumes crystal meth?

Bad things. Crystal meth is bad for you diabetic or not. Besides being illegal it is also very dangerous very addictive. Nothing good happens with crystal meth.
Crystal meth. I'm sorry but it's only my responsible to say that your priorities are wrong here. Crystal meth obviously is illegal drug to give any credence or support to would not be professional. Diabetes is a deadly disease progressive disease that will only be made worse by any illicit drug. Many mechanisms would be in play. Please get help for your situation , professional help.