Also called dyspepsia, indigestion is a term used to describe a feeling of fullness or discomfort during or after a meal. It can be accompanied by burning or pain in the upper stomach.

The symptoms of indigestion include:
Bloating (full feeling).

Belching and gas.

Nausea and vomiting.

Acidic taste.

Growling stomach.

Burning in the stomach or upper abdomen.

Abdominal pain.

These symptoms may increase in times of stress.
People often have heartburn (a burning sensation deep in the chest) along with indigestion. But heartburn is caused by stomach acids rising into the esophagus.

Indigestion has many causes, including:
Stomach cancer (rare)
Stomach infections
Irritable bowel syndrome Chronic pancreatitis
Thyroid disease

Aspirin and many other painkillers.

Estrogen and oral contraceptives.

Steroid medications.

Certain antibiotics.

Thyroid medicines.

Eating too much, eating too fast, eating high-fat foods, or eating during stressful situations.

Drinking too much alcohol.

Cigarette smoking.

Stress and fatigue.

Swallowing excessive air when eating may increase the symptoms of belching and bloating, which are often associated with indigestion.
During the middle and later parts of pregnancy, many women have indigestion. This is believed to be caused by a number of pregnancy-related factors including hormones, which relax the muscles of the digestive tract, and the pressure of the growing uterus on the stomach.
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