 [ Symptoms ] my mother is in extreme pain for a detached rotator cuff but suffers from heart problems and taking medication [ Disease ] yes reflux can cause this if it is severe enough to have bleeding esophagus but i dont think this is the cause mostly it is due to the cough itself and nothing to worry about just keep him hydrated and salt water gargling is good ginger and anise guava leaves lemon honey are good remedies if the blood persisted get a culture sputum done