Health Library

Rhabdomyosarcoma in Children

Rhabdomyosarcoma is a type of cancer. It starts in cells that should grow into skeletal muscle cells. Skeletal muscles control voluntary muscle movements. These are movements we can control. This rare cancer is most common in children under age 10.

Rheumatic Fever

Rheumatic fever is a complex disease that affects the joints, skin, heart, blood vessels, and brain. It occurs mainly in children between the ages of 5 to 15.

Rheumatic Heart Disease in Children

Rheumatic heart disease is a condition that causes permanent damage to the heart valves.

Ringworm in Children

Ringworm is a type of skin infection cause by a fungus. Learn more about this condition, including cause, symptoms, diagnosis, and treatment.

Risk Factors for Pregnancy

Detailed information on identifying potential risks of a pregnancy as an important part of preconception care

Rocky Mountain Spotted Fever (RMSF) in Children

Rocky Mountain spotted fever (RMSF) is a bacterial infection. It’s spread by the bite of an infected tick. Learn details about symptoms, diagnosis, and treatment.

Roseola in Children

Roseola is a contagious viral illness. It causes a high fever and then a rash that develops as the fever goes away.

Rotavirus Infection in Children

Rotavirus is a contagious virus that causes nausea and diarrhea. It is the leading cause of severe infectious diarrhea in children.

Roundworm Infection in Children

Roundworm infection is a type of parasitic illness. This is an illness in which an organism lives inside the body of another creature. The worms live and grow inside the body and may cause symptoms.

Rubella in Children

Rubella is a viral illness that causes a mild fever and a skin rash. It is also called German measles, but is not caused by the same virus that causes measles (rubeola).

Safer Sex Guidelines for Teens

The only safe sex is no sex, most doctors say. But certain precautions and safe behaviors can reduce a person's risk of contracting a sexually transmitted infection.

Safety and Injury Prevention for Teens

Detailed information on safety and injury prevention for teens