Intractable Hiccups
Most hiccups clear up on their own within minutes. When they persist beyond 48 hours, they are called persistent hiccups; beyond a month, intractable hiccups. At that point they are not a nuisance but a medical condition that can seriously disrupt sleep, eating, and quality of life.
Medicine used to treat Intractable Hiccups
What keeps intractable hiccups going
The reflex involves a loop between the phrenic nerve, the vagus nerve, and the brainstem. Sustained irritation anywhere along that loop can lock the cycle open. Common triggers include gastro-oesophageal reflux, a distended stomach, central nervous system lesions, metabolic disturbances (uraemia, low sodium), or certain medicines. In clinical practice across Asia, prolonged hiccups are also seen after general anaesthesia and in patients with advanced cancer.
When a clear underlying cause cannot be corrected directly, medicines that dampen the reflex arc are used. Chlorpromazine is the most established option, acting on dopamine pathways in the mental health drug class to interrupt the hiccup reflex centrally. Treatment is usually short-term and guided by the severity and any underlying condition driving the episode.
If hiccups last more than 48 hours, or are accompanied by chest pain, difficulty swallowing, or unexplained weight loss, see a doctor rather than waiting them out.