Inform the doctor if:
What should I do if the patch falls off?
If the patch becomes loose, lifts at the edges or falls off, try to put it on again. You may secure the patch with an adhesive dressing (e.g. adhesive cover, TegadermTM).
Put on a new patch immediately, if:
After putting on the new patch, you now have a new "Patch Change Day" and new Day 1.