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Most cancers are staged with the Roman numerals I, II, III, and IV. The stage of cancer of the unknown primary is at least a stage II.

How much do you know about the liver? Read on to learn about this vital organ and its many important jobs.

When you have loss of sensation, you're more likely to hurt yourself and not know it. Learn how to protect your health and reduce your risk of injury.

Tinea versicolor is a fungal skin infection. It’s caused by yeast on the skin. It occurs most often in teens and young adults. But it can happen at any time.

Craniosynostosis is a condition where one or more of the bones of the skull close too early. This can cause problems with normal brain and skull growth.

Osteoarthritis is the most common form of arthritis. It is a chronic degenerative joint disease that affects mostly middle-aged and older adults. Osteoarthritis causes the breakdown of joint cartilage. It can occur in any joint, but it most often affects the hands, knees, hips, or spine.

Learn about tests that may be used to help diagnose a stroke, including a CT scan, an MRI scan, and an EEG.

Seasonal affective disorder (SAD) is a type of depression. It happens during certain seasons of the year, most often fall or winter. Here's what you need to know.

When an area of the brain is damaged, which typically occurs with a stroke, an impairment may result. An impairment is the loss of normal function of part of the body. Sometimes, an impairment may result in a disability, or inability to perform an activity in a normal way.