Fitness basics
Learning Center
Bruxism (teeth grinding)
Bruxism is a condition in which you grind, gnash or clench your teeth unconsciously when you're awake or while you're sleeping.
Latex allergy
This allergy is a reaction to proteins in natural rubber latex — found in medical gloves, balloons and more. Find out how to avoid many common triggers.
Rosacea
Learn about the symptoms, skin care tips and medicines for this common skin condition of the face that causes flushing and spider veins.
Growth plate fractures
Growth plate fractures — This common childhood bone injury often needs immediate treatment as it can result in a shorter, longer or crooked limb.
Undescended testicle
Learn about causes, complications and treatment of this condition in which one or both testicles aren't in the usual place within the scrotum.
Atypical hyperplasia of the breast
Learn how a diagnosis of atypical lobular hyperplasia or atypical ductal hyperplasia affects your risk of breast cancer and what you can do.
Multiple sclerosis
This nervous system disorder causes a range of symptoms — and while there's no cure, it's possible to have long periods of remission.
Orchitis
This inflammation of one or both testicles can cause pain and infertility. It's usually caused by a bacterial infection or the mumps virus.
Hydrocele
Find out more about the symptoms, causes and treatments for this swelling in the scrotum.
Delayed ejaculation
Learn what can cause delayed or absent ejaculation and how it can be treated.
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