My system is still so sensitive that any small change affects me.
Withdrawal caused insomnia and myoclonic jerks (jerking back awake when I fall asleep). If I have any stress before bedtime, even if it's just moderate activity, like tidying up around the house, it can cause the jerks to still happen.
If I try a new medication (for instance, a different OTC allergy med) I get sweaty and shaky.
I tried giving up wheat, but I got, again, sweaty and shaky. I found out that some people get gluten withdrawals. I went back to eating wheat and the symptoms went away gradually (took about a week).