Children's health
Learning Center
Pink eye (conjunctivitis)
This highly contagious eye condition can be itchy and uncomfortable. But much like the common cold, it rarely requires medicine or staying home.
Peripheral neuropathy
Learn what may cause the prickling, tingling or numb sensations of nerve damage and how to prevent and treat this painful disorder.
Painful urination (dysuria)
Learn about possible causes for pain, burning or other trouble while peeing and when to get medical help.
Pain and depression: Is there a link?
Depression can cause unexplained physical symptoms, such as headaches. Chronic pain can cause problems that lead to depression, such as poor sleep.
Ocular rosacea
Learn about symptoms, causes and treatments of ocular rosacea — an eye condition that often affects people who have skin rosacea.
Nutrition for kids: Guidelines for a healthy diet
See the current children's nutrition recommendations for protein, carbohydrates, more.
Nervous stomach: Is there such a thing?
Nervous stomach is a vague term that doesn't indicate a specific diagnosis.
Nervous breakdown: What does it mean?
Nervous breakdown isn't a medical term. It most often means a mental health crisis that affects your ability to meet your own needs and do daily tasks.
Nephrotic syndrome
Swelling around your feet and ankles is a common sign of this condition that occurs when your kidneys pass too much protein in your urine.
Nausea during pregnancy: A good thing?
Morning sickness is common during pregnancy. Understand what nausea and vomiting might mean while you're pregnant.
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