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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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All conditions that start with the letter S
  • Lung Illustration

    Sarcoidosis

    Sarcoidosis is a disease in which immune cells form small lumps, called granulomas, in your organs, often in the…

  • A young boy shows a skin rash covering his chest and arms. Scarlet fever is a bacterial infection that usually affects children between the ages of 5 and 15. It can be treated with antibiotics.

    Scarlet Fever

    Scarlet fever is a bacterial infection that usually effects children between the ages of 5 and 15. It can be…

  • A young women crouches in the corner and holds her head.

    Schizophrenia

    Schizophrenia is a mental illness that interferes with the way you think, feel, and behave.

  • 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…

  • 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…

  • 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 that is triggered by the seasons of the year. Symptoms usually…

  • Seborrheic Dermatitis

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

  • Preschool boy plays on a tire swing, leaning back as far as he can. Sensory processing disorder (SPD) is a condition that affects how your brain processes sensory information (stimuli).

    Sensory Processing Disorder (SPD)

    Sensory processing disorder (SPD) is a condition that affects how your brain processes sensory information (stimuli).

  • Sever's Disease

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

  • Sexual Dysfunction in Men and Women

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

  • Sexually Transmitted Infections (STIs)

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

  • Shaken Baby Syndrome (Abusive Head Trauma)

    Abusive head trauma (shaken baby syndrome) is a form of child abuse that can be deadly or leave a baby…

  • 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…

  • 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…

  • An illustration of lung shapes drawn in different colors. Shortness of breath happens when you cannot get enough air into your lungs. Causes include asthma, lung diseases, panic attacks, or allergies.

    Shortness of Breath

    Shortness of breath happens when you cannot get enough air into your lungs. It can be caused by asthma, lung…

  • Shoulder Instability

    Shoulder instability is the term doctors use when your shoulder is slightly out of place or feels like it…

  • Sick Sinus Syndrome

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

  • Sickle Cell Disease

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

  • 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…

  • Woman in business clothes holding sinuses in pain

    Sinus Infection (Sinusitis)

    A sinus infection is a condition where the lining of your sinuses becomes inflamed. It can be caused by bacteria…

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