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Learning Center
Ramsay Hunt syndrome
A shingles outbreak can affect the facial nerve near one of your ears, potentially causing facial paralysis and hearing loss.
Rectovaginal fistula
This open tunnel connects the rectum and vagina, allowing gas or stool to pass into the vagina. Learn about rectovaginal fistula treatment and self-care.
Recurrent breast cancer
Learn about symptoms that alert doctors to a breast cancer recurrence and strategies for treating cancer that comes back after initial treatment.
Respiratory syncytial virus (RSV)
This common illness affects the lungs. It can seem like a cold, but may be severe, especially in children. Know the symptoms and treatment.
Restless legs syndrome
Uncomfortable sensations in your legs can interrupt your sleep — making you drag through your day. These therapies calm the restlessness and improve sleep.
Salivary gland tumors
Learn about this rare tumor that forms in the salivary glands. Treatments include surgery and radiation therapy.
Salmonella infection
This common bacterial infection is spread through contaminated food or water and affects the intestinal tract. Learn more about prevention and treatment.
Scorpion sting
Scorpion stings are painful but rarely life-threatening. Young children and older adults are most at risk of serious complications.
Seborrheic dermatitis
Find out what you can do to treat this flaky skin condition that can cause scaly skin and stubborn, itchy dandruff.
Seborrheic keratosis
Learn more about the symptoms and treatments of this common, noncancerous skin growth that gradually appears as you age.
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