Why on earth would Kate McCann need to be in regular contact with a psychiatrist? She is not suffering from mental illness. Surely you mean psychologist?
Psychology is the study of people: how they think, how they act, react and interact. Psychology is concerned with all aspects of behaviour and the thoughts, feelings and motivation underlying such behaviour.
Psychiatry is the study of mental disorders and their diagnosis, management and prevention. Psychiatrists are medical doctors who have qualified in psychiatry. They often combine a broad general caseload alongside an area of special expertise and research.
Alan Pike is neither a psychiatrist nor a psychologist.
Kate McCann could well have been in need of a psychiatrist for various reasons. Firstly there is the claim that she was suicidal and suffering from depression. A psychologist or counselor would have been of assistance in dealing with these problems, but only a psychiatrist would have been able to prescribe medication.
Secondly, it would have been prudent from a legal perspective to have built up a relationship with a medical professional (i.e. a psychiatrist) who would be able to give full testimony in court to Kate McCann's mental state. The findings of a forensic evaluation could have cleared several questions up.
It is true that it is understandable that KM continued to go to Alan Pike, rather than go to someone else, because a relationship had been built up with him over the years and she obviously felt comfortable with him.
But the point still stands that as a counsellor with a social studies degree, he is significantly less well qualified to give an assessment of KM's mental health than a qualified psychologist or a psychiatrist.
I myself studied psychology for several years as part of a social studies degree, in the psychology department of a prestigious institution, and I would not in any way shape or form consider myself able to give anything but the broadest assessment of a particular individual's situation. You have all heard my comments from the peanut gallery on this forum.
Alan Pike admittedly has many years as a counselor behind him. But he is still far from the best person for the job, and more to the point a strange choice of witness in a court case instigated by the McCanns on a grave and complex matter.