Nail care
Learning Center
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.
Slide show: 7 fingernail problems not to ignore
See photos of fingernail conditions that warrant medical attention.
Narcolepsy
Learn more about this sleep disorder that causes periods of involuntary sleep, sleep paralysis and early rapid eye movement (REM) sleep.
Nail ridges: Cause for concern?
Vertical nail ridges are common and often become more prominent with age.
Mayo Clinic Minute: Fingernails are clues to your health
Learn six clues to identifying health conditions based on changes in your fingernails.
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.
Fingernails: Do's and don'ts for healthy nails
Find out the signs of a problem with your fingernails, plus tips for taking care of them.
Brain AVM (arteriovenous malformation)
Tangled blood vessels in the brain affect typical blood flow in this rare condition. Learn more.
7 fingernail problems not to ignore
Learn about fingernail conditions that need medical attention.