Mental health
Learning Center
Heart attack symptoms: Know what's a medical emergency
Watch for these heart attack symptoms.
Video: Migraine aura
A migraine aura is usually visual, but can also be a sensory, motor or verbal disturbance. This animation shows what happens when you have a migraine aura.
Guide to different tick species and the diseases they carry
Learn about different tick species and some of the diseases they may carry.
Vaginal odor
Learn about causes of unpleasant or unusual odor from the vagina and when to seek care.
Nausea and vomiting
Motion sickness and drinking alcohol are among the many common causes of nausea and vomiting. Serious diseases can also have this effect.
Rectal bleeding
Blood in your stool, on the toilet paper or in the toilet bowl can have various causes. See your doctor if it lasts more than a day or two.
Vaginal bleeding
Bleeding from your vagina that's different from your period might signal a problem. Learn about possible causes and when you should see a doctor.
Amenorrhea
Absence of menstruation (amenorrhea) may be linked to an underlying, treatable problem. Learn about amenorrhea causes and when to seek help.
Spitting up in babies: What's normal, what's not
Spitting up in babies is common — and usually nothing to worry about.
Unusual COVID-19 symptoms: What are they?
COVID-19 can cause a wide variety of symptoms, some more common than others. Learn about how COVID-19 can make you feel.
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