![dark zebra vs zebra 2 dark zebra vs zebra 2](https://audioz.download/uploads/posts/2016-01/1451763473_zebra2.jpg)
Some of the "tens" we have seen (both as a final diagnosis and during the course of treatment) are: A "10" (such as Chimerism) is a disease no doctor is likely to see a case of in their lifetime. A "1" denotes a fairly common disease, and usually the delayed diagnosis is the result of the patient lying about their medical history. Here on the wiki, for many episodes, we try to give each final diagnosis a "zebra factor", based on how likely it would be that a patient with that disorder would actually walk into (or be dragged into) Princeton-Plainsboro Teaching Hospital in Princeton, New Jersey. A patient showing symptoms of Lupus may have the disease, but is far more likely to have a more common ailment. Lupus is another zebra that often comes up in a differential, but has symptoms that are not unique to the disease and is not easy to test for definitively. However, granulomas together with the other symptoms leads to a definitive diagnosis. Its only distinguishing feature, granulomas, are also common in many diseases. For example, granulomatosis with polyangiitis has symptoms that mimic many common ailments. Some diseases are ultimate zebras - their symptoms are so similar to more common ailments, even though these diseases themselves are very rare, that it is unlikely even a good doctor will consider the diagnosis. However, it was not so much of a stretch in Dying Changes Everything, because the patient had an extensive history of worldwide travel. For example, leprosy was a zebra in Cursed, because the patient had never been to Asia. Some diagnoses that are zebras in one case are not necessarily zebras in every case. More than one critic has noticed that Princeton-Plainsboro Teaching Hospital has seen more rare diseases in House's seven seasons than most hospitals do in their entire operational history. For example, an immunosuppressed person with an infection will not show a fever.Ī large number of House's ultimate diagnoses are zebras.
![dark zebra vs zebra 2 dark zebra vs zebra 2](https://www.picclickimg.com/d/l400/pict/222197182380_/2-x-YuGiOh-Card-Dark-Zebra.jpg)
He also frequently reminds his fellows that they often have to ignore missing symptoms as most symptoms are not found in every patient who has a disease. However, as House usually only handles patients where common diseases have been ruled out, he often has to re-educate his fellows to not only consider rare diagnoses as part of the differential, but to prefer them. As such, during differential diagnoses most medical students (such as Foreman) have learnt to assume that the patient's symptoms are caused by a common ailment rather than a rare one. In medical slang, a zebra is a surprising, unexpected diagnosis derived from the phrase "if you hear hoofbeats, think horses and not zebras." In many cases, an uncommon or rare disease which has identical symptoms to a common disease qualifies as a zebra.