Back pain isn’t a direct symptom of acid reflux, but you can get a burning pain that may spread from your chest to your neck, shoulder blades, and lower back.
If your back pain is related to your acid reflux, it would most likely flare up when you eat a certain food or drink, and may be accompanied by heartburn, a burning sensation in your chest.
Rest is usually an option for nerve-related back pain, for example, but as it’s caused by the acid in the stomach, painkillers or antacids are a good solution to easing your symptoms.