The study of diseases, including their causes and effects.

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Congenital blindness due to retinitis pigmentosa - does it exist?

Retinitis pigmentosa (RP) patients typically become blind after a period of years in which their eye sight slowly deteriorates due to photoreceptor degeneration. Generally RP patients develop ...
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0answers
23 views

Finding confidence level of miRNA disease associations

I'm an undergraduate computer engineering student, and I have a project about bioinformatics. In this manner, I need to find prediction( or association I'm not sure the correct terminology) confidence ...
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24 views

Should gene therapy safety protocol include isolation?

In the case of a gene therapy trial where viral vectors are used to deliver genes into mammalian cells, including humans, should biosafety and ethical protocols include isolation of the patient as a ...
5
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1answer
67 views

Do people that don't feel pain shiver in the cold?

There are a few diseases that cause an insensitivity to pain. This question asks about the relationship between the cold and pain, which got me thinking: Is shivering a response driven by the ...
7
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1answer
71 views

Why do people with Down syndrome get fewer cancers?

I'm coming across some conflicting information regarding the correlation between cancer incidents and trisomy 21. I read a report from nature that discusses how Downs are only a tenth as likely to ...
2
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1answer
36 views

Detailed mechanism of the cause of diabetes mellitus type 1?

I have read in some texts that diabetes mellitus type 1 is caused by degeneration of beta cells due to our body's own immune reaction.Is it true? Can you explain further how are such types of immune ...
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1answer
89 views

Why is the upper respiratory tract so vulnerable to infections?

Wikipedia has the following statement on its Upper respiratory tract infection page: In United States URIs are the most common infectious illness in the general population. What is it about ...
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37 views

Are there anyother method under research for curing rabies? [duplicate]

Why is rabies incurable after onset of symptoms? Although we administer HRIG (lyssa virus antibody) to the patient, why doesn't it work after onset of symptoms? And are there any other successful ...
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2answers
172 views

In cancer, why do cells duplicate themselves?

In regards to cancer why do cells replicate themselves? If it's a mutation, what kind of mutation would this be classified as?
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0answers
26 views

Is there a graph or ontology that maps diseases to its possible causes or causing diseases?

I am looking for a mapping, list, ontology or graph that shows the connection between a diseases and its (currently known) causes and/or risk factors. For example a well known risk factor for acute ...
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1answer
45 views

Why does an complete molar pregnancy not result in a clone?

Complete molar pregnancy is one where an ovum devoid of nucleus is fertilized by a sperm after which the haploid set of chromosomes double to form a diploid set. As far as my understanding extends if ...
3
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1answer
38 views

Are some virus loads introduced to human cell but never triggered?

Is there a term or any evidence of phage DNA integrating into chromosomes/ DNA but never being triggered? For example, could a virus that affected Neanderthals still infect human cells today but is ...
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2answers
64 views

What is overdiagnosis?

What is overdiagnosis ? I have searched this Wiki result but didn't understood at all. Can you please explain the first two line of Wikipedia : Overdiagnosis is the diagnosis of "disease" that ...
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696 views

Why cancer is not a communicable disease?

I have seen this question where the author is asking a question about infectivity of virus. I wish to know why cancer is not a communicable disease?
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2answers
124 views

Is fever a disease or not?

I have seen this question where the author is asking why people take drugs for fever. So my question is: Is fever is a disease or not?
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18 views

Dimensions of an ulcer

This is my understanding of the dimensions of ulcer. Please answer if it's correct. Any more information is very welcome. Edge represents the lateral wall of ulcer. Margin represents the borders in ...
3
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1answer
20 views

Are abrasions considered closed wounds?

A closed wound is one where skin is intact and underlying tissue is not exposed to the environment. Abrasion is an erosion of skin usually due to sheering force. In most cases the dermis is intact ...
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0answers
12 views

Swellings with Variegated consistency

I am interested in knowing the names of all swellings with variegated consistency. I have come across the following: Malignant swelling with partial necrosis Caseated tuberculous lymph nodes ...
7
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1answer
63 views

Can people with paralyzed eye muscles see?

As far as I am aware, the saccades of the eye are central to sight perception. If the eye is held still, the human stops seeing, even if light is reaching the retina and the visual pathway is intact. ...
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2answers
135 views

Why do skin and nail go blue in cyanosis?

I have learned that Cyanosis presents with blue skin and nails. What is the reason for the blue coloration of the skin and nails? Why wont the skin and nails turn another color in the visible spectrum ...
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18 views

Are there any viruses that are part of all land animals?

An article on I Fucking Love Science (linked to below) got me thinking, are there any viruses that have been so successful that they have spread to all land animals similar to Toxoplasmosis which has ...
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1answer
220 views

Why doesn't HDL cause diseases like LDL? [duplicate]

LDL particles pose a risk for cardiovascular disease when they invade the endothelium and become oxidized, since the oxidized forms are more easily retained by the proteoglycans. A complex set of ...
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1answer
126 views

Why does our voice change when we get affected by cold or cough?

Why does our voice change when we get affected by cold or cough? I observed the voice change thing in so many people including me.
4
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1answer
87 views

Potential to destroy viruses using prions? [closed]

Could a prion be used to sufficiently deform a viral protein in order to make the virus it is a part of incapable of reproducing? For example, take the common cold's VP1 protein and turn it into a ...
3
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1answer
33 views

Action of Ebola Viruses

This video suggests that the first cell to be the victim of viral infection of ebola is the dendritic cell which acts as the leader of immune system cells.But I am unable to understand how the ...
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1answer
46 views

Do distinctions between dry, tickly and chesty coughs have any medical basis?

Background At least in Britain you normally come across distinct kinds of cough medicine "chesty", "dry" and "tickly". Questions Are "chesty", "dry" and "tickly" coughs always due to ...
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1answer
38 views

Would humans eventually evolve to fight off fatal diseases if we didn't treat/vaccinate for them? [duplicate]

I am definitely pro vaccination, and the question is a bit morbid because people would die, but assuming that we didn't treat or vaccinate people for fatal diseases such as Ebola or the black death, ...
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2answers
51 views

Hydrophobia Outside of Rabies?

RELATED: Why does rabies cause hydrophobia? Agony, Hydrophobia and viruses in the light of evolutionary principles Has hydrophobia been found outside of rabies? I have only seen it ...
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2answers
40 views

regarding genetic disorders related to protein production

I am not completely familiar with biology, but i had a genetics course in college along with practicals. Forgive me if there is something wrong with my question. Is there a genetic disease which ...
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1answer
39 views

What are the features on a microscope one needs in order to do lab work?

By lab work I mean urinalysis, blood work(live as well), fecals, cytologies, histologies and all other. I have read(partly) a book(from 2002) on lab diagnostics and the author did not mention ...
2
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1answer
97 views

A subtle test for color-blindness [closed]

Is there a test method of proving a person being color-blind, without letting the test subject know, that he/she is being tested? E.g. showing the person cards with colored dots like depicted here is ...
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2answers
4k views

Reasons why people say that AIDS/HIV doesn't exist

It's been recurrent when I hear people saying that AIDS doesn't exist. When I ask why, they give weird reasons like HIV is a virus created to control economy and to develop medicine, etc. Also when I ...
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2answers
125 views

Is ebola non-contagious until symptoms appear? Why?

There's been a lot of talk lately about the man who recently came down with ebola in Dallas, Texas. While I live elsewhere, I keep hearing quotes from CDC and state officials that ebola is not ...
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1answer
73 views

Why is the ebola virus so intense now?

So i'm looking into the ebola crisis and it seems the death toll is really getting crazy. I understand that it's a cytomegalovirus and that it basically overwhelms the immune system due to it's size ...
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1answer
33 views

How do colds and flu not infinitely recur?

I'm in my third week of university, and a large number of people I know, including myself, still have "fresher's flu", which is probably just a cold and a cough. My lectures are constantly punctuated ...
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How do we determine a disease's incubation period?

There was a suspected case of Ebola in France, which was later dismissed, since the suspect lastly came into contact with a potentially contaminated person more than 21 days before, which is the ...
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26 views

Does drinking spoiled milk that has been boiled upset the GI tract?

With water, boiling will kill harmful pathogens. Does this also hold true for milk ? If it does not, what in the milk will continue to cause gatrointestinal distress ? Shouldn't boiling kill the ...
3
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1answer
70 views

How many times can a human get chicken pox?

How many times can a human get chicken pox? For example: I got chicken pox, and recovered. If I was infected with HIV, and I am exposed to chicken pox again, can it infect me second time?, According ...
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1answer
137 views

What is the difference between clinical and non-clinical depression, and is there a term for different severity of the bipolar disorder?

I was looking for a term which describes a bipolar disorder of lesser severity. I know from experience from someone I know well, what a very severe case of the bipolar disorder looks like, when an ...
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0answers
71 views

Can diseases be transmitted wirelessly? [closed]

According to the recent research about Electromagnetic Signals from Bacterial DNA (A. Widom, J. Swain, Y. N. Srivastava, S. Sivasubramanian) it seems there is a possibility of a "wireless" version of ...
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2answers
2k views

Why would taking antibiotics increase stamina and energy?

I often hear that people who are taking antibiotics experience wild fluctuations between feeling full of energy and completely alert but soon after feeling impossibly fatigued and sick. Does this ...
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2answers
285 views

Why does a blood test show ethanol when no alcohol was consumed?

Why would ethanol show up in a blood test if a person had not been drinking alcohol in many years. What are other reasons for showing ethanol?
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3answers
1k views

Why is the current Ebola outbreak different from previous outbreaks?

I don't know if this question has an answer at this time, but I would like to know if there is some biological reason why the current Ebola outbreak is so much more complicated and widespread than in ...
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1answer
137 views

In scuba diving, are nitrogen narcosis and high pressure nervous syndrome the same thing?

In training for scuba diving, they tell you that when you're bellow 100 ft or so you have to watch out for changes in mental state that resemble drunkenness. The cause of these mental disturbances is ...
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28 views

Subtypes of Acute myeloid leukemia

I am a computer scientist with no biological background and working on analyzing lab results of patients with Acute myeloid leukemia. They have been tagged with following subtypes of AML: AML with ...
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2answers
185 views

Standard Process Identification of New Disease outbreak Causing Pathogen

Is the any standard procedure or protocol followed for the identification of cause of new disease outbreak(or new pathogen)? Is it different for different countries?
8
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1answer
217 views

Can a bacteriophage be used to treat bacterial diseases?

Some bacteriophages reproduce using the lytic cycle which ends with the destruction of the host bacterial cell. I was wondering if theoretically this could be used theraputically to treat bacterial ...
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1answer
31 views

What are the movement mechanisms of thrombus?

I am thinking how thrombus (veins, arteries and heart) can move. Secondary mechanisms come to my mind only: some enzyme which lyses it, probably adhesion mechanism. Blood circulation (flow rate) ...
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2answers
79 views

Can a fungus become resistant to a chemical such as Potassium Permanganate?

A friend used potassium permanganate solution to treat tinea on the hands/feet but after some initial success, the tinea seems to be making a comeback. Could the fungus develop resistance to potassium ...
3
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1answer
90 views

how can a pseudo coelomate like ascaris lay 200k eggs in a single day

as per this site the dimensions of eggs of ascaris lumbricoides are 78-105 microns and as it is shown in the pic down here only half of the body cavity would be used for storage of all the stages of ...