Hiccups (persistent)

A hiccup is a sudden, involuntary contraction of the diaphragm — the muscle beneath the lungs — followed instantly by the snapping shut of the vocal cords, which makes the characteristic 'hic' sound. It is driven by a reflex arc involving the nerves that supply the diaphragm and the base of the brain, and it can be triggered anywhere along that path. Almost everyone gets short bouts, and these are entirely harmless: the usual triggers are eating or drinking too quickly, fizzy drinks, alcohol, a sudden change in stomach temperature, overeating, excitement or stress. These settle within minutes to hours. The picture changes when hiccups are persistent (lasting more than about 48 hours) or intractable (lasting weeks). Prolonged hiccups can be a clue to something irritating that reflex arc or the nerves along it — commonly acid reflux (GERD) or a stomach problem, but sometimes conditions in the chest or, less often, disturbances of the body's chemistry such as a low sodium, a low calcium, or the build-up of waste products in kidney failure. Certain medications and, occasionally, neurological conditions can cause them too. So while hiccups are almost always trivial, hiccups that go on for days deserve a look for an underlying cause.

• Eating or drinking too fast, fizzy drinks, alcohol — the usual, harmless triggers of short bouts.
• Overeating, excitement, stress, a sudden temperature change.
• Acid reflux (GERD) or a stomach problem — a common cause of prolonged hiccups.
• Electrolyte or metabolic disturbances — low sodium, low calcium, or waste build-up in kidney failure.
• Certain medications.
• Less commonly, conditions in the chest or a neurological cause — with persistent, intractable hiccups.

Short-lived hiccups need no investigation at all. When hiccups are persistent (more than a couple of days) or keep coming back, a doctor looks for a cause, and simple blood tests can be part of that: electrolytes including sodium and calcium, and kidney function (urea, creatinine), since disturbances here can drive hiccups. Depending on the picture, reflux is considered and, for truly prolonged or intractable hiccups, further assessment of the chest, abdomen or nervous system may follow. Mediora.AI can surface an electrolyte or kidney-function abnormality from your results that might contribute to persistent hiccups, but hiccups that last for days are assessed in person by a doctor to find the cause.