The National Audit of Dementia found many dementia patients fail to have the proper checks when they are in hospital.
It said too few patients have their mental state assessed, and information is often not shared properly.
However, the study found some improvements since its first analysis of care in England and Wales in 2011.
The audit looked at data from 210 hospitals across England and Wales including case notes for 8,000 patients with dementia.
For further information please read the following news story on the BBC News website Dementia patients miss key tests.
There are currently just over 42,700 people living with dementia in Wales and much work has taken place nationally to identify the areas which need to be addressed in order to improve the lives of those with and affected by this condition.
This has led to the creation of the National Dementia Vision for Wales which provides a long-term vision to ensure our country can best meet the challenge of the increasing number of people living with dementia.
As an organisation we are now focussing on dementia and the mental health issues it raises across Wales with further information available in our Dementia section on this website.
If you have any questions about WaMH in PC's work with dementia in Wales please contact us via email at lhills@rcgp.org.uk or on 029 2050 4516.