In September 2017, the National Institute for Health and Care Excellence (NICE) published a clinical guideline for the diagnosis and management of endometriosis.¹ Accompanying the guideline for this complex and variable condition is a patient decision aid (PDA) that was developed by a group of clinicians, patients and a representative from Endometriosis UK. The PDA has been designed for patients to work through with a healthcare professional and covers symptom relief, contraceptive reliability, practicalities of treatment, effect on periods, as well as providing advice on stopping treatment, information about planning pregnancy and details of …