A planet always retrogrades when its path brings it nearest to Earth . One might reckon that a retrograde planet is actually more powerful than when it is moving in its normal direct motion.
ADD is associated with hyperactivity.
Children are given Ritalin, an amphetamine-related stimulant. On the surface, Ritalin seems like it would just make the hyperactive kids even more hyper, but they reach a point of over-stimulation, and then they shut down. Mercury retrograde works the same way. It is not a bad time. It s only difficult if you are not prepared to handle the increased load of data.