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Diseases and Conditions

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

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  • diagram showing interrupted airflow during sleep

    Sleep Apnea

    Sleep apnea is a serious sleep disorder that can cause you to stop breathing multiple times while you sleep.

  • close-up of doctors hands checking man’s moles

    Skin tags

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

  • A doctor uses a lighted instrument to closely examine moles on a female patient’s neck

    Skin Cancer

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

  • Sjögren’s Syndrome

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

  • Woman in business clothes holding sinuses in pain

    Sinusitis

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

  • doctor performs an echocardiogram to check the heart

    Silent Heart Attacks

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

  • Sickle Cell Disease

    Sickle cell disease (SCD) is a genetic red blood cell disorder.

  • Sick Sinus Syndrome

    Sick sinus syndrome is the name for several conditions in which your heart doesn’t work the correct way. Your heart…

  • Shoulder Instability

    Shoulder instability is a condition when your shoulder is slightly out of place, but not completely out of the…

  • An illustration of lung shapes drawn in different colors

    Shortness of Breath

    Shortness of breath is the feeling that you cannot get enough air into your lungs. It can be a symptom…

  • A shingles rash on a man’s back

    Shingles

    Shingles is a painful skin rash. It is also called zoster or herpes zoster. It is caused by the same…

  • Woman runner holding shin in pain

    Shin Splints

    Shin splints describe a type of pain in your shinbone (tibia). They are often caused by overuse and heal within…

  • Sexually Transmitted Infections (STIs)

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

  • Sexual Dysfunction in Men and Women

    Learn about the symptoms, causes and treatment of sexual dysfunction disorders.

  • Sever's Disease

    Sever’s disease is a common heel injury that occurs in children. It is painful and caused by swelling of the…

  • Preschool boy playing on a tire swing, leaning back as far as he can

    Sensory Processing Disorder (SPD)

    Sensory processing disorder (SPD) affects how your brain processes sensory information, such as things you see, hear, smell, taste, or…

  • Seborrheic Dermatitis

    Learn about the causes of and treatment options for seborrheic dermatitis.

  • sad-looking woman in a coat and scarf stands under an umbrella in the rain

    Seasonal Affective Disorder

    Seasonal affective disorder (SAD) is a type of depression triggered by the seasons. It is likely related to the loss…

  • Pediatrician examining little girl with back problems.

    Scoliosis

    Scoliosis is an abnormal curve of the spine (backbone). Normally, the spine is straight. With scoliosis, the spine is crooked…

  • Hand Massage to help pain in the finger joints.

    Scleroderma

    Scleroderma is a rare autoimmune disorder. There are 2 types of scleroderma. One type affects the skin. The other type…

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