Pathway, DCD is developmental co-ordination disorder. It effects physical co ordination, balance, hand writing, planning, sense of time, capacity to follow sequential instructions, working memory etc. It is associated with being fatigued more easily from physical and mental effort. It used to be called dyspraxia. You are probably right that a diagnosis in adulthood won't make a huge difference. However, sometimes understanding particular limitations/difficulties can lead to greater acceptance and less stress. Also on the plus side there are particular strategies that can help manage the condition.
Best wishes,
DS