Diseases and Conditions

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

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  • Sick Sinus Syndrome

    Learn about the symptoms, diagnosis and treatment of sick sinus syndrome, the name for several conditions in which the heart’s…

  • 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 when the lining of your sinuses are inflamed. Due to the swelling, mucus that travels from your sinuses…

  • Sjögren’s Syndrome

    Sjögren’s syndrome is an autoimmune disease that causes dry mouth and dry eyes. It can also cause dryness in other…

  • 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 is an irrational fear of being judged by others during social situations.

  • Somatic Symptom and Related Disorders

    Somatic symptom and related disorders is a group of conditions in which the physical pain and symptoms a person feels…

  • 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 caused by too much exposure to ultraviolet (UV) radiation.

  • 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…