Teen health
Learning Center
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.
Livedo reticularis: When is it a concern?
Learn when this condition that causes a lacy pattern on the skin is simply a result of being chilled or something more serious.
Sexually transmitted disease (STD) symptoms
Learn about symptoms of some of the more common diseases that can be passed through sex.
Sundowning: Late-day confusion
Sundowning isn't a disease. It's a symptom that often occurs in people with dementia.
Aspirin allergy: What are the symptoms?
An aspirin allergy or sensitivity can cause serious symptoms.
Ocular rosacea
Learn about symptoms, causes and treatments of ocular rosacea — an eye condition that often affects people who have skin rosacea.
Dry orgasm
It's possible for men to reach sexual climax without ejaculating. Learn about the possible causes.
Salt craving: A symptom of Addison's disease?
Constantly craving salt could signal a medical condition, such as Addison's disease.
Heavy menstrual bleeding
Learn about the causes and treatment of heavy menstrual periods.
Amenorrhea
Absence of menstruation (amenorrhea) may be linked to an underlying, treatable problem. Learn about amenorrhea causes and when to seek help.
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