[From the perinatal period to adolescence: the three stages of coordination].

The need for coordinated organisation between infant-child psychiatry and adult psychiatry is highlighted through key periods, with the aid of a clinical case: the perinatal period and the hospitalisation of a mother with her child; the psychiatric support of the unwell mother and that of her daughter; then the transition for the 16-year-old teenager towards adult psychiatry. Taking into consideration the mother-child bond is essential and requires collaborative care projects, the creation of opportunities for joint reflection and organisation, and the acknowledgement that internal institutional divisions exist which are too often denied.

[Partnership around difficult teenagers in Brest].

The issues surrounding difficult teenagers results in professionals formalising a partnership. Certain areas of focus are identified such as getting to know each other better in order to understand each other better, working in a "common language", understanding professional identities, or embracing long term partnership. Pressure to assess and rationalise spending, as well as political challenges, must be taken into consideration.

[Bipolar disorders in children and adolescents].

While difficult, early detection of bipolar disorders in children and adolescents is crucial. Depending on age, diagnosis may be more or less difficult. Family history and the environment must also be taken into account.