Diseases and Conditions

Know how to prevent, treat and control the symptoms of various diseases and medical conditions. We explain what's happening in your body when disease strikes, and what you can do to feel better faster.

Learn More / Page 4

A national survey finds that one-third of Americans used prescription opioid painkillers in 2015, and millions were taking them without prescriptions. What's the reason for this huge number?

By Jesslyn Shields

We often lack the resources to treat and educate everyone when combating disease. Moving the 'hubs' of a social network to the front of the line may be most effective.

By Jesslyn Shields

And that unique ability may propel us closer to an HIV vaccine for humans.

By Kate Kershner

Advertisement

Mosquitoes spread deadly malaria, and trimming one specific shrub could make significant headway in battling the disease.

By Laurie L. Dove

A new study shows that by testing for multiple genetic factors, it's possible to identify those who have a higher-than-normal risk of developing testicular cancer, a disease that often strikes young men.

By Patrick J. Kiger

The CDC has an app to help you make wise food choices while traveling.

By Alia Hoyt

It's called oral allergy syndrome, and it's caused when the immune system freaks out and overreacts to allergens.

By Shelley Danzy

Advertisement

We often feel unsure about what to say to a friend with a serious illness, so we fall back on clichés. Here are some better ways to help from people who've been through it.

By Alia Hoyt

Many women dread the squishing of their chest during their annual checkup. Is there another way to get the same results in a more breast-friendly way?

By Alia Hoyt

If you're moving from one city to another, pack some extra tissues because it's true: Seasonal allergies can flare up when you relocate and are exposed to new allergens.

By John Perritano

Researchers and doctors know some cancers in teens have skyrocketed since 1975. They just don't know why.

By Nichole Bazemore

Advertisement

The branding on cigarette boxes steers smokers who pick up the packs. But without it, smokers aren't as keen on taking a drag.

By Kate Kershner

A first-of-its-kind study looks at the physical stresses of being a tattoo artist.

By Alia Hoyt

Updated quarantine regulations which would give federal health officials more leeway to detain sick people have some legal and civil rights experts concerned.

By Patrick J. Kiger

This is what happens when fearless knitters take on breast cancer one stitch at a time.

By Kate Kershner

Advertisement

Sure, the carrier mosquitoes are in the U.S., and so is the disease. But other factors will stave off a widespread incident, experts say.

By Patrick J. Kiger

The causes of IBS have been unknown — until now.

By Michelle Adelman

Sometimes the nose knows. What advances are being made in detecting diseases by scent?

By Laurie L. Dove

Contradicting earlier advice, the study found that introducing these foods earlier is better.

By Melanie Radzicki McManus

Advertisement

Is September too early and December too late? Or does the timing matter less than you might think for a flu shot?

By John Donovan

Relieving sinus pressure isn't rocket science, but when your head's clogged up, it can feel just as important.

The FDA is recommending that all blood donations start being tested for Zika virus in the next 12 weeks. But what about the blood already on hand? What happens to that?

By John Donovan

For most people, sinuses are only really a problem in the spring and fall, when allergies, colds and flu take over. But for an unlucky few, sinus pressure and pain come with the job.

By Dave Roos

Advertisement

Throw some germy surfaces into a mix of dry air and a pressurized cabin, and you have a recipe for sinus misery.

When your sinuses are clogged and you can't breathe, it might help to know how those cavities work. Over-the-counter decongestants help, too.