The condition continues to progress gradually, even with DBS treatment and medication. It is therefore most likely that a dopamine deficiency occurs at night, as that is when the longest time has elapsed since the last dose was taken. You can test whether the symptoms improve with an extra dose during the night of, for example, fast-acting Madopark Quick (Mite) a couple of times to confirm that the symptoms are due to a dopamine deficiency. If a pattern emerges, there are many options for adjusting the medication or, possibly, the DBS settings to achieve a longer-lasting anti-Parkinson’s effect at night, which must be assessed on an individual basis. /Håkan Widner