Open the app, on the "Pain Conditions" card, press "View All Pain Conditions" and you will be taken to "My Conditions" screen.
Press the "three vertical dots" icon on the right-hand side of a pain condition.
You will be shown a pop-up at the bottom of the screen - select "Edit".
Alternatively, you can press the pain condition you wish to edit and you will be taken to "Edit Pain Condition" screen.