Patient discussion about communicable disease

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Q. Is psoriasis infectious?

Last week I and my friends from high-school went to the pool. One of my friend has psoriasis on his back, and when the lifeguard noticed it he asked him to leave the pool because he has skin disease that may spread to the other people swimming in the pool. We told him it is psoriasis and not some fungus, but he told us that psoriasis is also infectious. Is that true? Can psoriasis infect people who come in touch with people with psoriasis? Can I go swimming with him or should be more cautious?
A1It is right that psoriasis is not a contagious skin condition. But your friend should take care. However keeping skin humid is better for Psoriasis patients as I recently read these tips at

A2It's genetic. You cannot "CATCH" psoriasis!!
A3I’m sorry to hear about your friend’s bad experience. People can be so mean and bad, and it’s even worse when they think they’re right when they behave like that. Your friend can’t make you have psoriasis, no matter how much he’ll touch you, so you can go swimming with him with out any worries.

Q. Is leukemia contagious?

A friend of mine got leukemia (blood cancer), can I get it from him if he bleeds and I touch the blood? Like HIV I mean.
A1No, you don't have to be afraid, no chance of that. Your friend will need you to pass this terrible illness. So I recommend learning a bit about leukemia so you understand it better and won't avoid your friend.
You can get information on those 2 sites:
A2You can relax ? , you can not get Leukemia from another person. In fact even if you get blood transfusion from your friend and nothing will happen to you (unless he has a different blood type..). you can get leukemia if you are exposed to carcinogenic materials, radiation and Genetic abnormalities.

Q. Is psoriasis contagious?

My wife got psoriasis and I don’t want to get infected…
A1Psoriasis itself, as was written above, isn't contagious, i.e. if someone has psoriasis he or she can't transmit it to you. However, there is a form of psoriasis called psoriasis guttate that is associated with infection of the throat by a bacterium called streptococcus (which is contagious), so in some way it is contagious.

You may read more here:
A2Psoriasis is a chronic and genetic disease and has nothing to do with infections. But Hey, don't believe me, believe your wife :-)
A3No, psoriasis is not contagious. It is not something you can "catch" or "pass on." The psoriatic lesions may not look good, but they are not infections or open wounds. People with psoriasis pose no threat to the health or safety of others.

Q. How do vaccines protect individuals from infectious diseases?

Is it a 100% protection? And how come there are diseases without a vaccine?
A1Vaccine is a part of a pathogen (sometime the pathogen itself without the harmful part in it) that we inject to our self in order to get the body “ready” to meet the real disease. Unfortunately not all of the bacteria and viruses have vaccines. Some of them we can not mimic their proteins safely enough, or it won’t work any way. And sometimes it’s only partly effective, the body remembers it but not too well. So some of the vaccines offer only a partial protection.
A2i don"t think that theres anything that covers 100%,but it will come close too it,and somthings nobody has found a cure for,thats why there isn"t anything there,
A3The best protection from outside threats is our own body defense system- the immunological system. When that fails – you are in bug trouble (like HIV). A part of that system is adaptive and can manufacture small protein that recognizes in high specificity foreign bodies. They recognize it and attach to it and then the body removes it with the urine. But it takes time. Vaccines are taking a part of those bacteria and injecting you. Then your body recognize it and the next time he’ll meet the bacteria- it’ll be ready for him. Not all the bacteria has s good vaccine material.

Q. How contagious is chicken pox?

I just found out that a kid in my son's preschool has chicken pox. What are the chances my son got it too? He hasn't been vaccinated against it. He is 3 years old.
A1take it easy Issac. chicken pox is a typical disease children have. me too i still live. the most important thing is that your child does not scratch his face because it can make skin damages. your 3 year old child has only now with 3 years a more or less correct working lymph system. perhaps this link-page can help you too:

before you would like to go on with any vaccination, you should check out this very long list of links:

at the bottom you will also find links in english. vaccinations in general are very disputable/dubious and it is probably time that we learn about it.
A2Chickenpox is very contagious — so there is a big chance your son caught it too. Most kids with a sibling who's been infected will get it as well, showing symptoms about 2 weeks after the first child does. Chickenpox causes a red, itchy rash on the skin that usually appears first on the abdomen or back and face, and then spreads to almost everywhere else on the body, including the scalp, mouth, nose, ears, and genitals.
Some kids have a fever, abdominal pain, sore throat, headache, or a vague sick feeling a day or 2 before the rash appears. These symptoms may last for a few days, and fever stays in the range of 100°–102° Fahrenheit (37.7°–38.8° Celsius), though in rare cases may be higher.
A3Chickenpox is contagious, meaning that someone who has it can easily spread it to someone else. Someone who has chickenpox is most contagious during the first 2 to 5 days that he or she is sick. That's usually about 1 to 2 days before the rash shows up. Therefore, there is a big possibility that your son caught chicken pox from his classmate.

Q. Is Hepatitis C contagious?

My Girlfriend is a carrier for Hepatitis C. She got infected from a blood transfusion as a kid. Can I catch it from her?
A1yes,through oral and sexual intercourse,dont have oral sex and wear a comdom.
A2The hepatitis C virus (HCV) is spread by blood-to-blood contact. No vaccine against hepatitis C is available. Therefore, don't share items that might have blood on them such as tooth brushes, razors etc. Another way to get infected with hepatitis C is by sharing a needle with someone infected. The virus may be sexually transmitted, although this is rare, and usually only occurs when an STD (like HIV) is also present and makes blood contact more likely. Therefore, always use a condom.

Q. What is the difference between Infectious diseases and chronic diseases?

I would like a clear explanation of the difference between infectious diseases and chronic diseases.
AInfectious disease are diseases that are caused by a living creature (usually microscopic like germs or viruses but also by larger ones, such as lices).

Chronic diseases are diseases that persists for a long time (usually from several weeks but in many cases years or for life).

Infectious disease can be acute (short-living, such as simple sore throat) or chronic (such as tuberculosis).

Chronic disease may be infectious (such as many infections of the skin, infection of bones etc.) but may also be non-infectious (i.e. not caused by living creature, for example rheumatoid arthritis, diabeted, asthma etc.)

You can read more about them here: and here:

Hope I could help
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