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STD Basics

What is an sexually transmitted disease? How do you know if you have an STD? How are STDs transmitted? How can you avoid getting sick?
Warning: Photos May Offend Some Viewers
Top Sexually Transmitted Diseases You Should Know About

STDs are some of the most difficult diseases in the world to catch. You have to be up close and personal to spread them. Why, then, are they so common? Because people don't know how to treat, prevent, and avoid them.

An STD is any disease that is spread primarily by sexual contact. One partner transmits the disease-causing organism to the other partner during sex (oral/vaginal/anal/etc.). …

Things Everyone Should Know About Asymptomatic Disease &
One of the factors that makes STDs so common is that most people with an STD don't even know that they are sick. It is not uncommon for someone to be infected but have no STD symptoms - in other words to be asymptomatic. Therefore, people can be infected with an STD for many years without knowing. During that time, if they're not careful, they can pass their disease on to some or all of their sex…
The Incubation Period of Common STDs
You've just had unprotected sex with a new partner, and all of a sudden a strange mark has appeared in your pubic area. Although many sexually transmitted diseases can remain asymptomatic for years, it's good to have a few guidelines for when you're just being paranoid. If the sheets haven't even cooled down yet, that pimple is almost certainly not a new STD. Next time, practice safer sex. It will drastically reduce your stress levels.
An Overview of Sexually Transmitted Diseases
What are the most common STDs? How are they transmitted? What are their symptoms? Can they be treated, or are you stuck with them for good?
Asymptomatic Disease & The STD Epidemic
One of the factors that makes STDs so common is that most people with an STD don’t even know that they are sick. That’s why some scientists call STDs The Hidden Epidemic.
Top 10 Risk Factors for Acquiring an STD
Unprotected sex is only the most obvious risk factor for acquiring an STD. Did you know that having one STD can make you more susceptible to others?
Top 10 Ways to Avoid Contracting an STD
You know you want to have sex, but what's the best way to do so as safely as possible? How can you reduce the risk of contracting an STD?
Symptoms of Common STDs
Symptoms of STDs
Warning: Photos May Offend Some Viewers
Symptoms Checker
Have a lump, a bump, or an itch? Check your symptoms at the Symptoms Checker at About.com.
Getting Tested for an STD
How do doctors test for various STDs?
Treatment of STDs
How are STDs treated?
STDs During Pregnancy
STDs don't only affect your health, they can affect the health of your baby.
The Difference Between Sexually Transmitted & Associated Diseases
Sexually associated diseases are ones that you don’t get from your partner during sex. Instead, sexual activity itself increases your risk.

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