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COVID-19 variants: What's the concern?

The virus that causes COVID-19 has changed over time, which has affected prevention, diagnosis and…

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COVID-19 vs. flu: Similarities and differences

Coronavirus disease 2019 (COVID-19) and seasonal flu have many similarities and differences. Find out what…

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COVID-19: Who's at higher risk of serious symptoms?

Advanced age and some health conditions can raise the risk of serious COVID-19 (coronavirus disease…

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CPAP machines: Tips for avoiding 10 common problems

Making small adjustments to your CPAP machine can help you use it more comfortably.

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Cradle cap

Learn about the symptoms, treatments and home care tips for this short-lived type of seborrheic…

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Craniopharyngioma

Learn more about this noncancerous tumor that forms near the brain's pituitary gland, including diagnosis…

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Craniosynostosis

In this condition, one or more of the flexible joints between the bone plates of…

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Craniotomy

Learn what brain conditions are treated with this surgery that involves removing a piece of…

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Craving and chewing ice: A sign of anemia?

Craving and chewing ice (pagophagia) is often associated with iron deficiency with or without anemia.

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Creatine

Find out how creatine might affect your athletic performance and how the supplement interacts with…

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Creatinine test

This test is a measure of how well the kidneys are doing their job of…

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Creutzfeldt-Jakob disease

Learn what can put someone at risk of developing this rare brain disorder that causes…

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Crohn's disease

Learn about symptoms and treatment for this debilitating, but treatable, digestive condition.

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Croup

This upper airway infection makes it harder to breathe and causes a barking cough. It…

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Crying baby: What to do when your newborn cries

Listening to a crying baby can take a toll on your emotions. Follow these tips…

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Cryoablation for cancer

Learn how cryoablation is used to treat a variety of cancers, including bone, kidney, lung…

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Cryoglobulinemia

When atypical proteins in the blood clump together at temperatures below 98.6 F (37 C),…

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Cryotherapy for prostate cancer

Find out how very cold temperatures are used to freeze tissue and treat prostate cancer.…

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CSF leak (Cerebrospinal fluid leak)

Cerebrospinal fluid leaks may start in the brain or spine, causing headaches, dizziness and other…

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CT coronary angiogram

Learn about the risks and results of this imaging test that looks at the arteries…

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Tomodensitométrie

This imaging test helps detect internal injuries and disease by providing cross-sectional images of bones,…

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Curcumin: Can it slow cancer growth?

Some research suggests that curcumin may help prevent or treat cancer.

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Cushing syndrome

High levels of the hormone cortisol in your body cause this endocrine disorder. Learn about…

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Cutaneous B-cell lymphoma

Find out more about the symptoms, diagnosis and treatment of this type of non-Hodgkin lymphoma.

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Cutaneous T-cell lymphoma

Learn about this type of non-Hodgkin lymphoma that attacks the skin. Find out about symptoms,…

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Cuts and scrapes: First aid

Following guidelines to care for minor cuts and scrapes can help you avoid infection and…

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Cuts of beef: A guide to the leanest selections

Whether you're watching your health or your weight, you can still enjoy this type of…

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Cyclic vomiting syndrome

This condition often starts in childhood and is marked by spells of vomiting several times…

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Cyclothymia (cyclothymic disorder)

Also called cyclothymic disorder, this mood disorder causes emotional ups and downs that are less…

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Cystic fibrosis

This condition, passed down in families, causes damage to the lungs, digestive system and other…

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