pickwickian syndrome

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Pickwickian Syndrome



A group of symptoms that generally accompany massive obesity.


Pickwickian syndrome is a complex of symptoms that primarily affect patients with extreme obesity. The syndrome is named after a character in a Charles Dickens novel, The Pickwick Papers, who seemed to show some of the traits of this disease.
The major health problem that occurs in patients with this disease is sleep apnea. This is caused in part by the excess amounts of fatty tissue surrounding the chest muscles. This excess fat places a strain on the heart, lungs, and diaphragm of the patient, making it difficult to breathe.

Causes and symptoms

The major cause of Pickwickian syndrome is extreme obesity. This obesity places an excessive load on the pulmonary system. The role of genetics is also being studied. Symptoms of Pickwickian syndrome include excessive daytime sleepiness, shortness of breath due to elevated blood carbon dioxide pressure, disturbed sleep at night, and flushed face. The skin can also have a bluish tint, and the patient may have high blood pressure, an enlarged liver, and an abnormally high red blood cell count.


Some tests that can be used to diagnose this condition include echocardiography to determine heart enlargement or pulmonary hypertension. Giving the patient multiple sleep latency tests can help give an objective measurement of daytime sleepiness. Magnetic resonance imaging (MRI), computed tomography (CT) scans, or fiberoptic evaluation of the upper airway may also be used.

Key terms

Latency — The period of inactivity between the time a stimulus is provided and the time a response occurs.
Obesity — Exceeding one's normal weight by 20%. A person suffering from extreme obesity would exceed their normal weight by a much higher percentage.
Pulmonary system — Lungs and respiratory system of the body.


The primary treatment for Pickwickian syndrome is focused on weight loss and increased physical activity. Also, medroxyprogesterone may help improve the condition.


Pickwickian sydnrome is entirely reversible if it is diagnosed and treated properly. If the problem goes undiagnosed, the outcome can be fatal.


Prevention of Pickwickian syndrome can be achieved by maintaining a healthy body weight and getting the proper amount of exercise. For prevention of the sleep apnea that generally accompanies Pickwickian syndrome, there are several possible treatments. If the sleep apnea is only present when the patient is flat on their back, a tennis ball can be sewn into the sleep clothes to remind the patient not to sleep on their back. For more severe cases of sleep apnea, a tonsillectomy or the use of dental appliances may be recommended.



Dambro, Mark R. The 5-Minute Clinical Consult. Baltimore: Williams & Wilkins, 2001.
Tierney, Lawrence, et. al. Current Medical Diagnosis and Treatment. Los Altos: Lange Medical Publications, 2001.


"'Apples' and 'Pears': Defining the Shape of the Problem." FP Report 6 (November2000).
Kushner, Robert F., and Roland L. Weinsier. "Evlauation of theObese Patient." Medical Clinics of North America 84 (March2000).
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.

pick·wick·i·an syn·drome

a combination of severe, grotesque obesity, somnolence, and general debility, theoretically resulting from hypoventilation induced by the obesity; hypercapnia, pulmonary hypertension, and cor pulmonale can result.
[after the "fat boy" character in Dickens' early novel The Pickwick Papers]
Farlex Partner Medical Dictionary © Farlex 2012
A complication of extreme obesity, which is characterised by marked cardiovascular compromise, decreased tidal and expiratory reserve volumes, alveolar hypoventilation, hypoxia, cyanosis and hypercapnia, if severe and prolonged, dyspnoea, polycythemia, cardiac hypertrophy, pulmonary hypertension, pulmonary oedema, congestive heart failure, extreme somnolence, obstructive sleep apnea syndrome; O2 therapy may be fatal, as it removes the chemoreceptor drive needed for respiratory movement
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

pick·wick·i·an syn·drome

(pik-wik'ē-ăn sin'drōm)
A combination of severe, grotesque obesity, somnolence, and general debility, theoretically resulting from hypoventilation induced by the obesity; hypercapnia, pulmonary hypertension, and cor pulmonale can result.
[after the "fat boy" character in Dickens' early novel The Pickwick Papers]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

Pickwickian syndrome

The association of obesity, excessive sleepiness, abnormally shallow breathing and SLEEP APNOEA. The syndrome is related to defective control of respiration and long-term lack of oxygen in the blood. It is named after the fat boy Joe in The Pickwick Papers of Charles Dickens.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
References in periodicals archive ?
Other than COPD, conditions such as pneumonia, acute lung injury, asthma, acute respiratory distress syndrome, neuromuscular disease, chest wall disorder, and obesity hypoventilation syndrome are treated with non-invasive ventilators.
1 issue of the American Journal of Respiratory and Critical Care Medicine, recommendations are presented to guide management and improve outcomes for patients with obesity hypoventilation syndrome (OHS).
Her symptoms of hypoxia, tachycardia, and shortness of breath can be attributed to a postictal phase or even obesity hypoventilation syndrome, which would have delayed the diagnosis and hence the treatment, if not for careful history taking and maintaining a wide differential diagnosis.
Assessment and management of patients with obesity hypoventilation syndrome. Proc Am Thorac Soc 2008;5:218-25.
(87) In addition, the prevalence of OSA patients with obesity hypoventilation syndrome (OHS), so-called Pickwickian syndrome, in which the prognosis was worse than in OSA patients without hypoventilation, was almost the same in Japan and in Western countries.
Background: As obesity increases, the frequency of obstructive sleep apnea and obesity hypoventilation syndrome increases also.
One UAE study with the objectives of assessing the prevalence of obesity hypoventilation syndrome (OHS) among OSA patients revealed that 8.5% [5.4-13.1%; CI 95%] of the studied patients had OHS [20].
Obesity hypoventilation syndrome (OHS) is defined as the combined presence of obesity (BMI > 30 kg/[m.sup.2]) and hypoventilation (partial pressure of arterial carbon dioxide [PaCO2] > 45mmHg) in the absence of other diseases that contribute to hypoventilation [1-4].
However, both fail to reduce metabolic or inflammatory markers in obese patients with OSA [10] or obesity hypoventilation syndrome [11] and have no significant effect on spontaneous physical activity [12].
Obesity hypoventilation syndrome. Am J Respir Crit Care Med 2011;183(3):292-8.
Obesity in adulthood leads to high blood pressure, strokes, type 2 diabetes, dementia, osteoarthritis, sleep apnea, obesity hypoventilation syndrome, reproductive problems, gallstones, and some cancers (esophagus, pancreas, colon, rectum, breast after menopause, endometrium, kidney, thyroid, and gallbladder).
Obesity hypoventilation syndrome (OHS) is defined as obesity (body mass index, >30 kg/m [sup]2 ) with daytime hypoventilation (PCO [sub]2 , >45 mmHg) that is not secondary to cardiopulmonary or neurologic disease.