Why does the doctor experience decision fatigue too, and how does it hurt treatment planning? Decision fatigue is not just a patient problem. It is your problem. You walk in already spending decisions on staff issues, schedule chaos, clinical calls, and every notification buzzing in your pocket. By afternoon your own reserve is drained, and a drained brain plans worse, presents worse, and gets impatient with tradeoffs. So the case you treatment-plan at five in the evening may not be the case you would have planned fresh at nine. Worse, a tired doctor unconsciously steers patients toward the easy default too, [...]