Methadone and oedema in the palliative care setting: a case report and review of the literature.

INTRODUCTION

Methadone is a synthetic opioid which is being used with increased frequency in the palliative care setting for management of complex pain. There have been cases published reporting the development of oedema with methadone maintenance therapy but no cases on the association with methadone and peripheral oedema in the palliative care setting. As yet, the underlying mechanisms are unclear.

CASE PRESENTATION

This case report describes a gentleman with ependymoma and difficult-to-control lower back pain and scrotal pain. This pain had failed to respond to other strong opioids. He was prescribed methadone and then subsequently developed bilateral peripheral oedema.

CASE MANAGEMENT

Peripheral oedema resolved following cessation of methadone.

CONCLUSIONS

This highlights an important potential adverse effect of methadone in a society of increased methadone prescription for pain control. The published literature to date is reviewed and possible underlying mechanisms explored.