Recognizing the Signs: Symptoms and Red Flags of EPS

Recognizing the symptoms of Encapsulating Peritoneal Sclerosis (EPS) is often a challenge because the condition develops slowly, and its early signs can be easily mistaken for other digestive issues or dialysis-related changes ^[1]. Because many patients are diagnosed after they have transitioned to hemodialysis or received a kidney transplant, it is vital to stay vigilant even if you are no longer using your peritoneal membrane for dialysis ^[2][3].

Early Warning Signs: The “Pre-EPS” Phase

Before the physical “cocoon” fully forms around the intestines, the peritoneal membrane often begins to show signs of distress while you are still on Peritoneal Dialysis (PD) ^[4]. These markers are not symptoms you “feel,” but rather changes your care team may notice in your dialysis numbers:

• Ultrafiltration Failure: A decline in the membrane’s ability to remove enough fluid during a dialysis exchange ^[5]. This occurred in about 63% of patients in one study before their EPS diagnosis ^[6].
• High Peritoneal Transport Status: The membrane begins to move solutes (like waste products) too quickly, which often makes dialysis less effective ^[4]. This was noted in 75% of patients at the time of diagnosis ^[6].
• Loss of Sodium Sieving: A technical measurement where the membrane loses its ability to filter sodium properly—this is considered one of the strongest predictors that EPS may be developing ^[5].

If you are currently on PD and notice your fluid removal is dropping, it is important to discuss these “membrane markers” with your nephrologist, especially if you also have new digestive symptoms ^[4].

The Progression of Digestive Symptoms

As the membrane thickens and begins to restrict the movement of your intestines, symptoms often fluctuate. They do not always follow a perfectly predictable path, but they generally involve recurrent bouts of partial bowel obstruction ^[7].

• Intermittent Symptoms: You may experience vague abdominal pain, alternating diarrhea and constipation, or early satiety (feeling full very quickly after a few bites of food) ^[8].
• Worsening Obstruction: Nausea and occasional vomiting may begin. You might notice anorexia (a loss of appetite) and unintentional weight loss as your body struggles to process food ^[1][8].
• Chronic Changes: The pain becomes more regular, and abdominal distension (visible swelling of the belly) occurs ^[7]. At this stage, the intestines are significantly restricted.

Important Note on Self-Treatment: Do NOT attempt to self-treat suspected bowel obstruction with laxatives, enemas, or drastic diet changes without medical advice. In a restricted bowel, adding laxatives can sometimes worsen pain or cause dangerous complications. Always consult your team first.

When to Seek Immediate Help

Because EPS involves the physical tightening of a “shell” around your bowels, it can lead to life-threatening complications like a complete bowel obstruction (where nothing can pass through) or ischemia (where the blood supply to the bowel is cut off) ^[9][10].

Red Flags: Emergency Care (Call Your Local Emergency Number or Go to the ER)

Seek emergency medical attention immediately if you experience:

• Intractable Vomiting: Persistent vomiting that you cannot stop, especially if it is green or yellow (bilious vomiting) or if you cannot keep down vital medications (like transplant immunosuppressants) ^[11].
• Absolute Constipation (Obstipation): The inability to pass any gas or stool ^[11]. Please note: a bowel obstruction can sometimes still allow small amounts of liquid stool to pass, so the absence of gas is a critical warning sign.
• Severe, Sharp, or Changing Abdominal Pain: Pain that is sudden, rapidly worsening, or feels different from your usual chronic discomfort ^[9].
• Signs of Shock: Feeling faint, confused, having a very fast heart rate, or a sudden drop in blood pressure ^[12].
• Fever and Severe Tenderness: This may indicate perforation (a hole in the bowel) or a severe infection ^[13]. Note that if you take immunosuppressants for a transplant, your body may not produce a high fever even during a severe infection.

Same-Day Clinic Call

Contact your nephrologist or surgical team the same day if you notice:

• A significant increase in abdominal swelling or “tightness” ^[8].
• Any meaningful change from your usual baseline bowel pattern ^[7].

A simple symptom diary—tracking your pain, vomiting, distension, bowel movements, weight, and temperature—can be an invaluable tool to share with your medical team to help them understand if your symptoms are worsening ^[1].