Search Page

Rocky Mountain spotted fever is a bacterial infection passed to humans by wood ticks and dog ticks that can lead to life

Root canal treatment (also called a root canal) is a dental procedure done to remove the infected core (pulp) of a tooth. This

The roots of a tooth, which extend below the gum line and anchor a tooth into the jawbone, have nerves and blood vessels that

Roseola (roseola infantum) is a mild viral illness that affects young children. When a child has roseola, he or she has a sudden

Rotavirus infection affects the digestive tract and is the most common cause of vomiting and severe diarrhea in babies and young

Rubella, also called German measles, is a contagious infection caused by a virus. It usually causes a mild illness with a fine

Rhinitis is an inflammation of the nasal passages that is most often caused by allergies or respiratory infections. You may have a

Electrical pulses in the heart are controlled by special groups of cells called nodes. The SA (sinoatrial) node generates an

Salivary glands produce saliva, which moistens the mouth to help a person chew and swallow food. Saliva also contains substances

Saturated fats are those that become hard at room temperature. They are found mostly in animal-based foods (such as meat, butter