I am not a doctor, but my son was also on concerta, and that can be a side effect of that. We had success switching him to Straterra, out of everything he's tried that has the least side effects, and it's once a day, dosing is based on weight, and even adults take it who have adult add. Look up drug side effects for concerta. Maybe changing the medication might help, and it does take some time for the medication and there side effects to clear their system.