Toddler health
Learning Center
How your brain works
Which part of your brain does what? Take a tour.
Video: How cancer spreads
Watch this video to see how cancer spreads (metastasizes).
Types of dermatitis
Learn to identify types of dermatitis by how the skin looks. Examples include atopic dermatitis, contact dermatitis and seborrheic dermatitis.
Premenstrual dysphoric disorder: Different from PMS?
Extreme moodiness, intense sadness or marked irritability in the days before your period — along with your usual PMS symptoms — could be PMDD.
Cervical cysts: Can they be cancerous?
Cervical cysts usually aren't cancerous. Some types of cervical cysts are so common that they're considered a normal feature of cervical anatomy.
Bladder infection in men
Although women are more likely to get bladder infections, men can get them, too. Learn about signs and symptoms and what could put you at risk.
Allergies and asthma: They often occur together
Allergies and asthma? Find out how to control both conditions.
Mayo Clinic Minute: Demystifying epilepsy
Epilepsy is a fairly common condition, but seizures can usually be controlled with medications.
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