Diseases and Conditions

Find doctor-approved information about symptoms, causes, diagnosis, treatment and prevention of common diseases and conditions.

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  • Sickle Cell Disease

    Sickle cell disease is a genetic condition. It runs in families and is more common in African Americans. It refers…

  • Silent Heart Attacks

    A silent heart attack is a heart attack without the traditional symptoms. Nearly half of all heart attacks are silent…

  • Sinusitis

    Sinusitis is a condition in which the lining of your sinuses becomes inflamed. Learn about the symptoms, causes, and…

  • Sjögren’s Syndrome

    Sjögren’s Syndrome is an autoimmune disease that causes dry mouth and dry eyes. It can also affect other parts of…

  • Skin Cancer

    Skin cancer is the most common form of cancer and highly preventable.

  • Skin tags

    Skin tags are non-cancerous skin growths that feel like a hanging mole. They are common with age.

  • Sleep Apnea

    Sleep apnea is a serious sleep disorder. People who have sleep apnea stop breathing for 10 seconds to 30 seconds…

  • Sleepwalking

    Learn about the causes of and ways to deal with sleepwalking.

  • Slipped Capital Femoral Epiphysis

    Slipped capital femoral epiphysis is a hip problem. It starts if the growing end of the thigh bone slips from…

  • Small Vessel Disease

    Small vessel disease is a narrowing in the tiny arteries in your heart. It also is called coronary microvascular disease…

  • Social Phobia

    Social phobia, also called social anxiety disorder, is a fear of being judged, embarrassed, or rejected by others.

  • Somatic Symptom and Related Disorders

    Somatic symptom and related disorders is the name for a group of conditions in which physical pain and symptoms are…

  • Sore Throat

    Learn what may be causing your sore throat, and what you can do about it.

  • Speech and Language Delay

    Every child develops at his or her own pace. But if your child doesn’t talk as much as most children…

  • Spina Bifida

    Spina bifida is a birth defect that affects the development of a baby’s spine during the mother’s pregnancy. The baby’s…

  • Spinal Cord Injury

    Spinal cord injuries (SCIs) can be caused by an accident or disease. Learn about the symptoms, treatment, and outlook of…

  • Squamous Cell Carcinoma

    Squamous cell carcinoma is a common form of skin cancer. It is usually caused by too much exposure to UV…

  • Stomach Cancer

    Learn about the symptoms of and treatment options for stomach cancer.

  • Stomach Virus (Gastroenteritis)

    Stomach viruses are known for stomach pain, vomiting, and fever. There are several causes and it can be very contagious…

  • Strabismus

    Learn about the causes of and treatments for strabismus, or cross-eyes.