Hiccups, medically known as *singultus* are a condition experienced by almost everyone worldwide. This phenomenon often strikes suddenly and without warning, sometimes at inconvenient moments, such as while speaking in public or enjoying a quiet dinner. Although most cases are temporary and harmless, the repetitive “hic” sensation can be quite bothersome. However, why do we get hiccups? Let’s debunk the answer to this question here!
What Are Hiccups and How Do They Occur?
Hiccups are a bodily reflex involving the coordination of nerves, respiratory muscles, and the glottis. The process begins when the phrenic nerve or the vagus nerve, the two primary nerves controlling the diaphragm, undergoes irritation or abnormal stimulation. The vagus nerve has an extensive reach, extending from the brain to the digestive system, meaning that even a minor disturbance in the stomach can trigger a reaction in the diaphragm.
When the diaphragm contracts suddenly (spasms), you rapidly inhale air. However, within milliseconds, the upper part of the trachea, or the vocal cords closes to halt the airflow. This causes a sudden shift in air pressure, producing the characteristic “hic” sound. This reflex typically repeats at a relatively steady rhythm, ranging from a few times per minute to a higher frequency.
Why Do Hiccups Happen? Common and Medical Causes
The causes of hiccups can be divided into two broad categories: short-term hiccups (lasting less than 48 hours) and persistent or chronic hiccups (lasting from more than 48 hours up to several weeks).
1. Triggers for Short-Term Hiccups
Most hiccups you experience are usually caused by simple lifestyle-related factors, including:
- Eating too quickly or too much: A stomach that suddenly distends due to a large amount of food can press against the diaphragm and trigger contractions.
- Carbonated drinks: The gas in soda or carbonated beverages can cause stomach bloating, which in turn irritates the diaphragm.
- Sudden temperature changes: Consuming a very hot drink immediately after a cold meal or vice versa, can stimulate nerves in the throat area.
- Strong emotions: Sudden fear, intense excitement, or stress can disrupt normal breathing patterns.
- Swallowing air (Aerophagia): This often occurs when chewing gum or smoking.
2. Causes of Persistent (Chronic) Hiccups
If hiccups last longer than two days, doctors will typically look for more serious medical causes, such as:
- Nerve Irritation: Disturbances to the phrenic or vagus nerves caused by a neck tumor, goiter, or even a hair touching the eardrum (which is connected to the vagus nerve).
- Digestive System Disorders: Conditions such as Gastroesophageal Reflux Disease (GERD) are very common medical causes. Stomach acid rising into the esophagus can irritate the vagus nerve.
- Central Nervous System Disorders: Brain tumors, encephalitis, stroke, or traumatic brain injury can impair the body’s ability to control the hiccup reflex.
- Metabolic Disorders: Reduced kidney function, electrolyte imbalances, or reactions to anesthesia following surgery can also trigger prolonged hiccups.
Often Overlooked Triggering Factors
- Excessive alcohol consumption, which can irritate the digestive system.
- Insufficient water intake, leading to a dry throat.
- Psychological conditions, such as anxiety disorders, that affect breathing patterns.
How to Treat Hiccups at Home
Although most hiccups resolve on their own, there are several long-standing techniques, supported by both anecdotal evidence and medical practice that can help stop these diaphragmatic contractions:
1. Breathing Manipulation
The goal is to increase carbon dioxide levels in the blood, which is believed to relax the diaphragm. You can try holding your breath for 10–20 seconds or breathing into a paper bag (not plastic) for a short while. This technique prompts the nervous system to prioritize blood gas regulation over transmitting hiccup signals.
2. Vagus Nerve Stimulation
You can stimulate the vagus nerve by quickly drinking cold water, gargling with ice water, or swallowing a spoonful of granulated sugar. This sensory shock at the back of the throat is often enough to “interrupt” the neural circuit causing the hiccups.
3. Physical Maneuvers
Pulling your knees toward your chest and holding them there for a minute can apply gentle pressure to the diaphragm. Additionally, performing the Valsalva maneuver, attempting to exhale forcefully while keeping your nose and mouth closed, can help stabilize pressure within the chest cavity.
That was the explanation about the question “why do we get hiccups?” Whatever the causes, it’s important to not ignore hiccups if the condition begins to affect your quality of life. Seek medical attention immediately if hiccups persist continuously for more than 48 hours. You should also be cautious and seek medical attention ASAP if:
- Hiccups accompanied by severe abdominal pain, shortness of breath, or vomiting.
- You experience difficulty swallowing or feel a lump in your neck.
- Hiccups occur alongside neurological symptoms such as numbness or speech difficulties.