RCEM – February 2024
It is important to recognise that CHS is unlikely to be definitively diagnosed in the Emergency Department (ED) due to the current diagnostic criteria. However, there are many clinical features which can lead clinicians to suspect a diagnosis of CHS and there are several nonconventional treatments that may be efficacious in treating the symptoms of CHS and may help to confirm it. The essential prerequisite for a CHS diagnosis is the long-term use of cannabinoids. There are no laboratory or radiographic investigations that can be used to diagnose CHS. The process of creating this guideline has included contemporaneous literature reviews for high-level evidence in the medical literature on all aspects of CHS, as well as searches for consensus agreement publications where they exist. The guideline group have formed consensus on areas lacking clear answers.