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Ocular migraine: When to seek help

Flashes of light, zigzagging patterns and temporary blindness — what does it all mean?

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Ocular rosacea

Learn about symptoms, causes and treatments of ocular rosacea — an eye condition that often…

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Office ergonomics: Your how-to guide

Use this visual ergonomics guide to make your sitting work space more comfortable.

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Oligodendroglioma

Learn about this type of tumor that can occur in the brain or spinal cord.

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Omega-3 in fish: How eating fish helps your heart

Learn how omega-3 fatty acids in fish can benefit heart health.

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Omega-6 fatty acids: Can they cause heart disease?

This healthy fat is found in some foods, and experts recommend it as part of…

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Oophorectomy (ovary removal surgery)

Learn about the risks, recovery and what to expect during surgery to remove the ovaries.

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Opioid stewardship: What is it?

Learn about the roles everyone plays in opioid stewardship, safety and overdose.

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Oppositional defiant disorder (ODD)

This childhood mental health condition includes frequent and persistent anger, irritability, arguing, defiance or vindictiveness…

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Optic neuritis

Learn about this painful eye disorder that affects your optic nerve and what your doctor…

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Oral cancer screening

Learn about the benefits and limitations of tests to detect mouth cancer.

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Oral health: A window to your overall health

Find out about the link between your oral health and overall health.

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Oral lichen planus

This ongoing inflammatory condition results in white, lacy patches or red, swollen tissues or open…

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Oral thrush

This infection is caused by the overgrowth of the fungus Candida albicans in the mouth.

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Orchitis

This infection of one or both testicles can cause pain and infertility. A bacterial infection…

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Organ donation: Don't let these myths confuse you

This practice saves lives, but wrong ideas surround it. Get the facts about being an…

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Organic foods: Are they safer? More nutritious?

Understand the differences between organic foods and traditionally grown foods when it comes to nutrition,…

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Orthostatic hypotension (postural hypotension)

This form of low blood pressure might cause dizziness, lightheadedness or fainting when rising from…

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Osteoarthritis

This most common form of arthritis mainly affects joints in your hands, knees, hips and…

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Osteochondritis dissecans

Osteochondritis dissecans most commonly affects children who are very active in sports. Learn about the…

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Osteomyelitis

Bones don't get infected easily, but a serious injury, bloodstream infection or surgery may lead…

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Osteopathic medicine: What kind of doctor is a D.O.?

You know what M.D. means, but what does D.O. mean? What's different and what's alike…

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Osteoporosis

Fractures associated with this bone-weakening condition can be life altering. Good nutrition, regular exercise and…

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Osteoporosis treatment: Medications can help

Find out more about your options for bone-preserving drugs, including how often you need to…

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Osteosarcoma

Learn about the symptoms and causes of this bone cancer that happens most often in…

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Ostomy: Adapting to life after colostomy, ileostomy or urostomy

Tips for coping with your stoma after colostomy, ileostomy or urostomy surgery.

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Otoplasty

Learn about this surgery that can change the appearance of the ears. Understand risks and…

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Outpatient joint replacement: Is it a safe option?

Joint replacement of the hip, knee, elbow and shoulder can be done safely as outpatient…

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Ovarian cancer

Learn more about cancer of the ovaries, including symptoms and treatments, such as surgery, chemotherapy…

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Ovarian cancer: Still possible after hysterectomy?

Surgery to remove your uterus may affect your risk of ovarian cancer, depending on the…

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