Indigestion (also called dyspepsia or “upset stomach”) is a group of symptoms like upper belly discomfort, burning, or feeling overly full during or after meals, rather than a single disease.

Quick Scoop: What Is Indigestion?

Indigestion is discomfort or pain in the upper abdomen that often shows up while you’re eating or shortly after. It’s not a disease by itself; instead, it’s a label for a cluster of digestive symptoms that can come and go or sometimes become long‑lasting.

Typical Symptoms

Common indigestion symptoms include:

  • Burning, pain, or discomfort in the upper abdomen or chest
  • Feeling full very quickly when you start eating
  • Feeling uncomfortably full for a long time after a normal or small meal
  • Bloating or a tight, gassy feeling in the upper belly
  • Belching, gas, or a sour taste in the mouth
  • Nausea, and sometimes vomiting

A simple everyday example: someone eats a normal dinner, but within minutes feels a burning pressure high in the stomach, has to loosen their waistband, and keeps belching for an hour—this fits typical indigestion.

What Causes It?

Indigestion can be triggered by many things:

  • Eating large, fatty, very spicy, or late‑night meals
  • Eating too quickly or swallowing lots of air while eating
  • Alcohol, caffeine, and smoking
  • Certain medicines (for example, some painkillers)
  • Stress and anxiety
  • Underlying conditions such as gastritis, peptic ulcers, GERD (acid reflux), or, less commonly, gallbladder or pancreas problems

When indigestion is frequent and no clear disease is found, doctors often call it functional dyspepsia.

Is It Serious?

Most of the time, indigestion is uncomfortable but not dangerous and can improve with lifestyle changes or simple medicines. However, it can occasionally signal something more serious, especially if you also have weight loss, trouble swallowing, vomiting blood, or black stools—those need prompt medical attention.

TL;DR: Indigestion is the name for a set of upper‑belly symptoms (burning, pain, fullness, bloating) that often happen around mealtimes, usually from how or what you eat, but sometimes from an underlying digestive condition.

Information gathered from public forums or data available on the internet and portrayed here.