A member asked:

Since being on fentanyl patches for back pain i keep getting sores on lips and tongue, urine retention, sore throat, and i'm very weak. please help.

A doctor has provided 1 answer
Dr. Romanth Waghmarae answered

Specializes in Pain Management

Fentanyl patches: Sores on the lips and tongue are probably not related. The urine and weak certainly could be related. This is probably an issue related to the dose. What does did you start on?

Answered 10/5/2017

2.3k views

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