Mental health of children with chronic illness

This open access review http://m.adc.bmj.com/content/100/4/308.full looks at trials of mental health intervention for children in physical illness.
Physical illness is,  as PMHA members will know,  a risk factor for mental health problems,  with around 20% having diagnosable conditions,  and many more suffering broader mental health problems.
The trouble is that there are almost no trials done in physical illness. In part this is understandable- liaison mental health services are small and under-resourced, the population is highly variable, and the symptoms are affected by complex factors which discourage the application of a single treatment modality.
However there are good reasons, precisely because of this complexity,  for thinking that treatment may need to be adapted to this group. Without more trials,  though,  we will never know.