Why do some adults with systemic sclerosis still have GERD despite taking acid reducers?
Many adults with systemic sclerosis continue to have severe reflux symptoms even while taking proton pump inhibitors. Research shows this happens because the disease damages the muscles that control digestion, preventing the body from clearing acid effectively. Standard acid blockers treat the chemical burn but cannot fix the mechanical failure caused by the disease.
What the research says
In a recent study of adults with systemic sclerosis, nearly all patients showed signs of reflux that did not respond to standard medication. The primary reason was severe esophageal dysmotility, where the esophagus lost its ability to contract or squeeze. This lack of movement meant that acid stayed in the esophagus much longer than normal, doubling the time it took to clear compared to healthy individuals 4.
The problem extends to the stomach as well. About 60% of these patients had gastric dysmotility, meaning their stomach muscles were also weak. This weakness increased the total amount of acid reflux episodes occurring throughout the day. When the stomach and esophagus cannot pump effectively, acid reducers alone are insufficient to manage the condition because the mechanical barrier fails repeatedly 4.
Other research highlights how mechanical issues often override chemical treatments. For example, when the stomach is altered surgically, such as with a sleeve gastrectomy, reflux rates can jump to 40% because the normal valve mechanism is disrupted. Even adding a magnetic device to reinforce the valve does not always work, as the device can erode or fail if the surrounding tissues are not functioning correctly 3. Similarly, studies on surgical repairs show that the type of repair matters significantly, as the body's ability to handle pressure and movement changes the outcome of the treatment 15.
What to ask your doctor
- Do I have esophageal dysmotility that is preventing my acid reducers from working?
- Can we test my stomach emptying speed to see if gastric dysmotility is part of my problem?
- Are there non-acid reflux treatments that address the mechanical squeezing issues?
- Is a specialized motility study needed before considering surgery or other interventions?
This question is drawn from common patient questions about this topic and answered using cited medical research. We do not provide individualized advice.