Questions tagged [differential-diagnosis]

Questions requesting help with or suggestions about the process of making the diagnosis of disease based on symptoms and clinical indicators. Differential diagnosis questions must be framed in terms of theoretical, academic discussion and not as requests for personal medical advice (as with all questions on this site).

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How do dermatologists make a differential Diagnosis between Psoriasis, Parapsoriasis and Skin Lymphoma in an otherwise healthy person?

It seems to me, from the following Google Images search, that the dermatological symptoms for Psoriasis, Parapsoriasis and Skin Lymphoma are quite similar, excluding a certain type of Psoriasis named ...
somo's user avatar
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4 votes
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How often are explicitly or implicitly bayesian approaches used in clinical diagnoses?

Intuitvely, patient diagnosis seems like a pardigmatically bayesian problem. I'm interested in the extent to which explicit (or implicit, if it can be established) bayesian reasoning informs patient ...
Robert Zarr's user avatar
3 votes
1 answer
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Distinguishing gallbladder polyps vs gallbladder cancer on ultrasound

"On ultrasound a gallbladder polyp is seen as an elevation of the gallbladder wall that protrudes into the lumen. (...) A clearly infiltrating or large mass should be treated as a gallbladder ...
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2 votes
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Are there differences in symptoms with different viruses that cause the common cold?

A recent XKCD comic proposed a humorous future pastime in which virus connoisseurs review and contrast the symptoms of different common-cold cases caused by different viruses, with the implication ...
Robert Columbia's user avatar
3 votes
2 answers
137 views

How do doctors go about diagnosing uncommon diseases?

This is a question about how doctors carry out diagnoses in practice, not one looking for medical answers. My question is, statistically most cases are horses, but how do you find the zebras? ...
TheEnvironmentalist's user avatar
1 vote
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How to distinguish between PKU and MSUD in a clinical case question?

This question was asked in a medicine quiz I was participating in. An 8-day-old boy is brought to the physician by his mother because of vomiting and poor feeding. The pregnancy was uncomplicated, ...
Bipasha's user avatar
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Which differential diagnosis procedure can distinguish a tendinopathy at the gluteus minimus from a tendinopathy at the gluteus medius?

Which non-invasive test differential diagnosis procedure can distinguish a tendinopathy at the gluteus minimus from a tendinopathy at the gluteus medius (trochanter insertion), aside from medical ...
Franck Dernoncourt's user avatar
2 votes
1 answer
74 views

Are there any "markers of low immunity" in people without any genetic immune disease?

Are there any blood or other tests that can reveal the immune status of people who have frequent infections but do not seem to have any genetic immunodeficiency disease? Merck Manuals mentions many ...
Alex S's user avatar
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1 answer
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How to differentially diagnose continuing sciatic pain given this existing information?

Pains along the sciatic nerve apparently have numerous possible causes (18 of them according to this article). Now, given the following facts, what would be appropriate differential-diagnostic ...
einpoklum's user avatar
  • 508
2 votes
2 answers
176 views

What textbooks do medical students read to learn how to diagnose illnesses?

Your family doctor obviously learned how to diagnose various illnesses, such as the flu, skin conditions (rashes, burns, etc.), etc. I was wondering what textbooks they studied in medical school to ...
The Pointer's user avatar
3 votes
1 answer
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Self diagnosis expert system similar to easydiagnosis.com

I am searching for a quality self diagnostics expert system similar to http://www.easydiagnosis.com (seams quite good) . Are there other avaliable for free ?
Ovidiu Buligan's user avatar
1 vote
2 answers
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Can Babesiosis be confused with Fibromyalgia?

I'm asking the question for someone who is both diagnosed Babesiosis and Fibromyalgia by different practicians. However the Babesiosis diagnosis seems weak because only based on a positive IgG (...
user6131's user avatar
1 vote
1 answer
89 views

Does Dermatitis Herpatiformis have a differential diagnosis?

"Dermatitis herpetiformis (DH), or Duhring's disease,[1][2] is a chronic blistering skin condition,[3] characterised by blisters filled with a watery fluid.[4] Despite its name, DH is neither related ...
Virginia's user avatar
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3 votes
1 answer
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ICD-10 codes: required to go to most-granular level?

Given the example ICD-10 codes below, will a diagnosis code ever not be the most-granular option within a given classification? For example, could a patient's code be left at I21.0 and not taken to ...
blacksite's user avatar
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2 votes
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562 views

Can one be diagnosed with Lupus without the "Butterfly" rash ever occuring?

Theoretically, if one had the majority of the symptoms for Lupus, and even tested positive for SLE via a ANA blood test result, but still hasn't had a "Butterfly" rash ever to appear -- could they ...
Butterfly and Bones's user avatar
4 votes
1 answer
961 views

Why doctors have different opinions and diagnosis for the same patient?

I really wonder why different doctors have different opinions or diagnosis. I've experienced this many times. For example, I went to ten doctors to see what's wrong with my eye. Some of them said I'm ...
user2824371's user avatar
0 votes
1 answer
89 views

Septic shock versus ordinary shock, symptoms?

Doctors seem to draw a distinction between "septic shock" and "shock"? From a symptomatic point of view, is there a way to tell the difference?
Tyler Durden's user avatar
2 votes
2 answers
237 views

How is myocarditis diagnosed?

How is inflammation of the hearth muscle (myocarditis) diagnosed? What are typical symptoms? What is it commonly mixed up with? How do you differentiate reliably?
vidstige's user avatar
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1 vote
1 answer
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Would a regular ultrasound be able to differnciate a benign ovarian cyst from an ovarian tumor? Or is a Transvaginal ultrasound needed?

Would a regular ultrasound ordered by an OBGYN be able to detect/differentiate typical benign ovarian cysts from an ovarian tumor? Or is a transvaginal ultrasound needed in that case? Are there ...
Butterfly and Bones's user avatar
1 vote
1 answer
778 views

Explanation of normal CRP during neutrophilia?

Let us assume we have a patient with this history and let us try to explain his/her normal CRP values on the end of this post given the fact of commorbid high fever and neutrophilia. The questions to ...
Slazer's user avatar
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2 votes
0 answers
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What are the differential diagnoses of increased ferritin?

What are the possible causes of increased ferritin in a 69 year old man who is otherwise normal and who is not anemic?
user5366179's user avatar