Eye care
Learning Center
Early HIV symptoms: What are they?
Early signs of the disease can include fever, fatigue and swollen lymph glands. Learn more.
Easy bruising: Why does it happen?
Get the facts about easy bruising. Learn about causes and find out when it's a sign of a problem.
Eye dilation: Necessary with every eye exam?
Eye dilation is part of a comprehensive eye exam. How often you need it depends on your age and health risks.
Eye injury: Tips to protect vision
An eye injury can happen in the yard, kitchen or even at the playground. Understand how to avoid injuries and when to seek medical help.
Fibromyalgia: Linked to other health problems?
Fibromyalgia often co-exists with several other painful conditions, which may be related to how your body processes pain signals.
Flu symptoms: Should I see my doctor?
See a healthcare professional if you are at high risk for complications from flu.
Food allergy vs. food intolerance: What's the difference?
Might you have to swear off milkshakes for good? Follow the symptom clues to find out whether you possibly have a food allergy or a food intolerance.
GERD: Can certain medications make it worse?
Certain medications can aggravate symptoms of gastroesophageal reflux disease (GERD). Learn more.
Guide to different tick species and the diseases they carry
Learn about different tick species and some of the diseases they may carry.
Headache
Headache: Symptom — Overview covers definition, possible causes of this painful symptom.
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