What Causes Persistent Hiccups?

Hiccups are a common occurrence in daily life—many people experience them after meals or drinking water. Thus, hiccups are generally considered entirely normal. However, persistent or recurrent hiccups over an extended period warrant attention. So, what causes chronic hiccups? Below is an explanation.

Causes of Chronic Hiccups

1. Indigestion

This is a relatively common cause in daily life. Some individuals maintain irregular eating habits—skipping meals or overeating erratically—and often eat too quickly without proper chewing. Such behaviors can lead to excessive gas accumulation in the gastrointestinal tract. As this gas is considered a foreign substance, peristaltic activity attempts to expel it—partially via hiccups and partially via flatulence.

2. Gastrointestinal Disorders

Chronic hiccups may stem from underlying gastrointestinal diseases. When gastrointestinal function is impaired, food may stagnate in the stomach. Fermentation of this retained food generates substantial gas, leading to gastric distension and subsequent hiccups. Additionally, certain cancers—particularly gastric cancer—can cause abnormal, persistent hiccups. In gastric cancer patients, digestive function deteriorates significantly, and gastric gas may reflux upward, resulting in continuous hiccups.

3. Neurological (Brain) Disorders

Certain neurological conditions—including encephalitis, brain tumors, and meningitis—may also trigger persistent hiccups. These disorders can disrupt central nervous system regulation, leading to abnormal stimulation of the phrenic nerve. The hallmark symptom is loss of voluntary control over hiccup reflexes, manifesting as frequent, uncontrollable hiccups. Therefore, if you experience recurrent hiccups accompanied by symptoms such as dizziness or headache, prompt medical evaluation is strongly recommended.

4. Cervical Spine Disorders

In clinical practice, cervical spine disorders can also induce intractable hiccups. Hiccups result from involuntary, spasmodic contractions of the diaphragm and its innervating nerves. Since the phrenic nerve originates primarily from cervical spinal nerves (C3–C5), severe cervical spine pathology—such as disc herniation or spinal stenosis—may compress or irritate these nerves, thereby triggering abnormal diaphragmatic contractions and persistent hiccups.

The above outlines the primary causes of chronic hiccups. We hope this information proves helpful.