The malaise of the infant represents a polymorphic pathology in its clinical presentation.

Due to the young age of the patients concerned and the parental anxiety generated, hospital management is necessary, for clinical and paraclinical evaluation and monitoring.

The practice of complementary examinations is guided by personal and family history, and the precise description of the discomfort as well as clinical examination of the child and assessment of his vital parameters.

However, in view of the particular terrain represented by infants under one year of age, a number of tests are carried out systematically, and therefore empirically, because they are not guided by the clinic.

These various tests can be invasive, anxiety-provoking for parents and generate a significant additional cost during hospital management.

An evaluation of the indication and interest of these tests is necessary in order to propose a homogeneous clinical and paraclinical management of the discomfort of the infant, in particular of discomforts of type BRUE (Brief Resolved Unexplained Events), as described in the 2016 American Academy of Pediatrics (AAP) recommendations.

Inclusion Criteria:

• Infant less than one year old
• Admitted to the paediatric emergencies of the CHRU of Nancy between 11/01/2019 and 04/30/2020 for discomfort

Exclusion Criteria:

• Child over one year old
• Reasons for consultation in paediatric emergencies other than "malaise";

Infant less than one year old, admitted to the paediatric emergencies of the CHRU of Nancy between 11/01/2019 and 04/30/2020 for discomfort