Hiccups Clinical Presentation
- Author: Garry Wilkes, MBBS, FACEM; Chief Editor: Steven C Dronen, MD, FAAEM more...
History
Medical training is not required to diagnose hiccups. Brief episodes that self-terminate or that respond to simple maneuvers need no investigation or follow-up care.
In contrast, persistent and intractable hiccups frequently are associated with an underlying pathological process and may induce significant morbidity. The focus of the history, examination, and investigation is to identify these causes and effects.
- Hiccups that abate with sleep and temporally relate to stressful circumstances commonly are psychogenic in origin.
- Arrhythmia-induced syncope has been reported as both the cause and the effect of hiccups.[1]
- Gastroesophageal reflux may cause or result from hiccups.
- Weight loss, insomnia, and emotional distress may complicate prolonged episodes.
- A full systemic inquiry, surgical history, and comprehensive drug history may reveal one of the many causes (see Causes).
- Alcoholism and acute alcohol ingestion may contribute to the development of hiccups.
Physical
A full physical examination is necessary. Considering the wide range of differentials, a complete and focused physical examination may yield evidence of the following:
- Head - Including ears, eyes, entire scalp
- Foreign body or aberrant hair adjacent to tympanic membrane
- Glaucoma
- Mouth -Pharyngitis
- Neck
- Inflammation (including laryngitis)
- Mass lesions
- Goiter
- Voice abnormalities (recurrent laryngeal nerve)
- Chest
- Tumors
- Pneumonia
- Asthma
- Cardiovascular
- Arrhythmias
- Myocardial infarction (MI)
- Pericarditis
- Unequal pulses -Thoracic aortic aneurysm
- Abdominal
- Gastric atony - Succussion splash
- Organomegaly
- Subphrenic abscess
- Cholecystitis
- Appendicitis
- Abdominal aortic aneurysm (AAA)
- Pancreatitis
- Peritonitis
- Rectal - Mass lesions
- Neurologic
- Focal lesions
- Disordered higher mental function
- Indications of multiple sclerosis
- Neck stiffness - Possible indication of tumors or infection
Causes
The cause of hiccups in children and infants is rarely found. Brief episodes in adults are usually benign and self-limiting.
Typical causes include gastric distention (ie, food, alcohol, air), sudden changes in ambient or gastric temperature, and use of alcohol and/or tobacco in excess. Psychogenic causes (ie, excitement, stress) also may elicit hiccups.
Persistent or intractable episodes are more likely to result from serious pathophysiological processes affecting a component of the hiccup reflex mechanism. More than 100 causes have been described; however, in many cases, the cause remains idiopathic. These may be classified as follows:
- Eighty-two percent of persistent or intractable episodes occur in men. An organic cause can be identified in 93% of men and in 8% of women, resulting in an overall organic incidence of 80%. The remaining 20% are considered psychogenic in origin.
- Hysteria
- Shock
- Fear
- Personality disorders
- Conversion disorders
- Malingering
- Central nervous system
- Structural[2] - Congenital malformations, malignancies, multiple sclerosis
- Vascular lesions
- Infection
- Trauma
- Diaphragmatic irritation
- Hiatal hernia
- Subphrenic abscess or collection
- MI[3]
- Pericarditis
- Vagus nerve irritation
- Meningeal branches - Meningitis, glaucoma
- Auricular branches - Foreign body, hairs
- Pharyngeal branches - Pharyngitis
- Recurrent laryngeal nerve - Mass lesions in neck, goiter, laryngitis[4]
- Thoracic branches - Infection, tumors,[5] esophagitis (ie, reflux), MI, asthma, trauma, thoracic aortic aneurysm, pacemaker lead complications[6]
- Abdominal branches - Tumors,[7] gastric distension, peptic ulcer, AAA, infection, organ enlargement, inflammation (eg, appendicitis, cholecystitis, pancreatitis,[8] inflammatory bowel disease)
- Procedure/anesthesia related[9, 10]
- Hyperextension of neck - Stretching phrenic nerve roots
- Manipulation of diaphragm or stomach
- Laparotomy
- Thoracotomy
- Craniotomy
- Metabolic
- Hyponatremia
- Hypokalemia
- Hypocalcemia
- Hyperglycemia
- Uremia
- Hypocarbia
- Fever
- Drugs
- Benzodiazepines[11]
- Short-acting barbiturates
- Dexamethasone
- Alpha methyldopa
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