Preschoolers
Learning Center
Thumb sucking: Help your child break the habit
Find out when and how to help your child stop thumb sucking.
Trichotillomania (hair-pulling disorder)
In this mental health condition, people can't resist urges to pull out hair from their body. They do this often. Therapy may help reduce or stop urges.
Keratoconus
When your cornea bulges outward, it can cause blurry vision and make your eyes sensitive to light. Find out about symptoms, causes and treatment for this eye condition.
Child sleep: Put preschool bedtime problems to rest
When a child has trouble sleeping, a gentle but firm bedtime routine is often the key to a good night's rest.
Brain AVM (arteriovenous malformation)
Tangled blood vessels in the brain affect typical blood flow in this rare condition. Learn more.
Narcolepsy
Learn more about this sleep disorder that causes periods of involuntary sleep, sleep paralysis and early rapid eye movement (REM) sleep.