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Learning Center
Nail fungus
Learn about symptoms, treatment and prevention of this common infection among older adults that causes nails to discolor and crumble.
Hepatitis A
This contagious liver infection is caused by a virus. Learn more about its symptoms, treatment and prevention, including the hepatitis A vaccine.
Waldenstrom macroglobulinemia
Learn about this rare type of white blood cell cancer. Treatments include chemotherapy, targeted therapy, immunotherapy and bone marrow transplant.
Tetralogy of Fallot
These four heart problems present at birth change how blood flows through the body. Know the symptoms and treatment.
Nightmare disorder
Nightmare disorder involves disturbing or scary dreams that awaken you, causing distress or preventing adequate sleep.
Social anxiety disorder (social phobia)
Learn more on this disorder where everyday interactions cause significant worry and self-consciousness because you fear being judged negatively by others.
Drug addiction (substance use disorder)
Drug addiction affects your brain and behavior to the point where you can't control your use of legal or illegal drugs, even when you know they cause harm.
Acne
Learn more about this common skin condition, including causes, treatments and simple skin care steps you can do at home to help control it.
Epididymitis
This inflammation of the coiled tube at the back of the testicle that stores and carries sperm is usually caused by a bacterial infection.
Anal itching
Learn about the causes, treatment and self-care tips for this common, sometimes embarrassing condition.
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