Acid reflux with diarrhoea and fatigue

A stomach infection, food intolerance, dehydration, a medicine side effect or another digestive problem may be responsible. The timing of each symptom and any recent changes help separate these possibilities.

Reflux happens when stomach contents travel upward into the oesophagus, causing burning, a sour taste or regurgitation. Diarrhoea comes from the bowel and is not a usual defining feature of reflux disease. A shared meal, acute digestive illness, stress or a newly started medicine can bring both complaints into the same period.

Frequent loose stools can remove water and salts from the body. That fluid loss may cause tiredness, thirst, dry mouth, darker urine or light-headedness. Fatigue can also follow poor sleep when reflux is troublesome at night.

Take small, frequent sips of water. If fluid loss is continuing, a pharmacist can advise whether an oral rehydration solution is suitable. Choose simple meals that you tolerate, avoid alcohol, and temporarily leave out foods that clearly trigger burning or loose stools.

Stay upright after eating and avoid a large meal close to bedtime. Keep a brief record of meals, bowel movements, reflux, medicines and fatigue. Do not stop a prescribed medicine without advice, but show the record to a pharmacist or clinician if symptoms began after a dose change.

Get urgent help if you cannot keep fluids down, feel faint or confused, pass very little urine, have blood or black material in vomit or stool, develop severe abdominal pain, or have chest pressure, breathing difficulty or pain spreading to the arm or jaw.

Arrange a clinical review if diarrhoea is not settling, fatigue persists after hydration improves, reflux keeps returning, swallowing is difficult, food sticks, or you are losing weight without trying. Babies, older adults, pregnant people and anyone with kidney disease, diabetes or reduced immunity may need earlier assessment.

Ask whether a current medicine could cause diarrhoea or reflux, whether dehydration needs treatment, and whether persistent symptoms warrant blood, stool or digestive tests. Bring the names and doses of prescribed, pharmacy and supplement products you use.