Index: sources/gui/qml/components/HeaderBar.qml
===================================================================
diff -u -rc843f1d6a805119ecadfa2c24f309f77e7637830 -r785e8b1148fb690e3610557a0f6a976284e36f46
--- sources/gui/qml/components/HeaderBar.qml	(.../HeaderBar.qml)	(revision c843f1d6a805119ecadfa2c24f309f77e7637830)
+++ sources/gui/qml/components/HeaderBar.qml	(.../HeaderBar.qml)	(revision 785e8b1148fb690e3610557a0f6a976284e36f46)
@@ -114,6 +114,10 @@
 
         VitalsButton { id  : _vitalsButton
             extraSpace      : _headerButtonRow.spacing
+            visible         : vTDOpMode.preTreatment        ||
+                              vTDOpMode.inTreatment         ||
+                              vTDOpMode.postTreatment       ||
+                              vTDOpMode.validateParameters
 
             onPressed       : _treatmentAdjustmentVitals.open()
         }