There has been much discussion about the proposed changes in the DSM manual which will come into effect in 2013. This is the standard reference for all diagnosis of mental disorders and of course, includes ADHD. The main changes concern the fact the condition will be divided into two main types, that of attention disorder (AD) and that of hyperactivity disorder (HD). These reflect better the reality of this condition as the number of cases where attention problems and hyperactivity co-exist are rare enough. There will be subtypes of course to take care of these cases. The other main change concerns the age of onset as this has now been raised to twelve as often, symptoms can appear quite late in childhood.