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  • Mother burping her newborn baby girl, who has milk coming out her mouth.

    Spitting Up in Babies

    Baby spit-up is gastroesophageal reflux, which is when milk or solid food in the stomach comes back up into your…

  • illustration of human anatomy with a close-up of the spleen

    Splenectomy

    A splenectomy is the surgical removal of your spleen.

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    Get more information about sponsoring content on familydoctor.org.

  • multigenerational family riding their bikes

    Sports and Exercise at Every Age

    Maintaining an exercise program is important at any age. It can help you build a foundation when you’re young and…

  • Sports Safety

    Finding a sport that you enjoy can make it easy to get some exercise in your life. Sports can help…

  • Dermatologist uses magnifying glass to examine a mole on the back of a male patient

    Squamous Cell Carcinoma

    Squamous cell carcinoma is a common form of skin cancer.

  • St. John's wort, herbal medical pills.

    St. John's Wort: Drug-Supplement Interactions

    St. John’s Wort is a plant used in teas, ointments, and dietary supplements for a list of health conditions. It…

  • Staying Healthy

    Discover health tips and topics to help you stay well and maintain a healthy body.

  • STI Symptoms and Prevention

    Learn about sexually transmitted infections and how you can prevent them.

  • Stomach Cancer

    Stomach cancer is the growth of cancer cells in the lining and wall of the stomach. It’s also called gastric…

  • Woman sitting on a couch holding stomach in pain

    Stomach Virus (Gastroenteritis)

    Gastroenteritis is a medical term for a stomach virus. Many people call it the stomach flu. It can strike anyone…

  • Stool Soiling and Constipation in Children

    Stool soiling happens when children who are toilet trained accidentally leak feces into their underwear. Constipation is one of the…

  • Strabismus

    Strabismus is an eye disorder. It affects the muscle control in your eyes. The eyes don’t line up properly. Instead,…

  • Doctor checking woman’s throat with a tongue depressor

    Strep Throat

    Strep throat is an infection caused by bacteria. It is called “strep” because the bacteria that causes the infection is…

  • A group of men and women in exercise class doing the same arm stretch

    Stretching

    Stretching is one of the best ways to keep your muscles healthy. Stretching regularly will maintain muscle strength and increase…

  • senior man receives injection from medical worker with gloved hands

    Stroke

    A stroke is a medical condition that occurs when the blood flow to your brain stops.

  • Stuttering | Causes and Treatment

    Stuttering is a condition that affects a person’s ability to speak smoothly. It can cause them to repeat words, parts…

  • closeup of a sty on a child’s eye

    Sty

    A sty is a painful, red bump that forms on the edge of your eyelid. It may look like an…