Mayo Clinic diet
Learning Center
Reactive attachment disorder
Reactive attachment disorder is when an infant or young child doesn't establish healthy attachments with parents or caregivers due to neglect.
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.
Retinoblastoma
Learn about the symptoms, causes and treatments for this eye cancer that occurs in young children.
Reye's syndrome
Learn more about the causes and treatment of Reye's syndrome, a rare but serious condition causing swelling in the liver and brain.
Rheumatic fever
Learn about this complication of strep throat and scarlet fever and what you can do to prevent it.
Rickets
Learn what can cause this bone-softening disease in children and how supplements may prevent or treat the condition.
Ringworm (body)
Learn more on causes, symptoms, treatments of this easily spread fungal skin infection that itches and is related to athlete's foot.
Roseola
Learn about the causes of and home-care tips for this common viral infection that often affects children by age 2, causing a high fever followed by a rash.
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