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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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  • Close-up of a narrowed small blood vessel

    Small Vessel Disease

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

  • Portrait of father and son outdoors.

    Fragile X Syndrome

    What is Fragile X syndrome? Fragile X syndrome is a genetic disorder. It is most often passed on from a parent to a child at the time the child is conceived. The disorder causes intellectual and developmental disabilities. This means it affects a person

  • An ill young woman with a fever holds an ice bag on her head while resting in bed. A cold and the flu are viral infections that affect the respiratory system.

    Colds and the Flu

    Learn about the symptoms of and treatments for colds and the flu.

  • A man holds his mouth in pain. Burning mouth syndrome (BMS) is marked by pain and discomfort in the mouth, lips, and/or tongue.

    Burning Mouth Syndrome

    Burning mouth syndrome (BMS) is marked by pain and discomfort in the mouth, lips, and/or tongue. Find treatment and tips…

  • Little boy sleeping in his bed suffering from hives

    Hives (Urticaria)

    Hives (urticaria) are bumps or patches on the surface of your skin. They can be red, itchy, and swollen and…

  • Toddler with chickenpox lying on stomach

    Chickenpox

    Chickenpox is a highly contagious disease caused by a virus. It once was a common childhood disease until a vaccine…

  • Urinary Tract Infection

    Learn about the symptoms, causes, diagnosis, treatment, prevention and complications of urinary tract infections (sometimes called UTIs or bladder…

  • Seborrheic Dermatitis

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

  • Pediatrician exams a child's lymph nodes. Mumps is a virus that is spread like the common cold. Mumps symptoms can cause you to feel sick for two weeks.

    Mumps

    Learn about mumps and how it can be prevented.

  • Stethoscope wth rotavirus sign

    Rotavirus

    Rotavirus is a highly contagious infection commonly affecting babies and young children. A rotavirus vaccine offers some, but not full,…

  • Mother holding a thermometer in the foreground with a sick child sleeping in the background

    Fever in Infants and Children

    A baby or infant's first fever can be scary. Learn how to take your child’s temperature, how to bring down…

  • Pityriasis Rosea

    Learn about the symptoms and causes of pityriasis rosea, and how it is diagnosed and treated.

  • Group B Strep Infection

    Group B strep is a common kind of bacteria that can sicken newborns who are exposed to it during…

  • A child’s hand with red and swollen skin around fingernail caused by a skin infection. Paronychia is a skin infection around the nails. It usually affects the skin at the base (cuticle) or up the sides of the nail.

    Paronychia

    Paronychia is a skin infection around the fingernails or toenails. It usually isn’t serious and can be treated at…

  • Tennis elbow - tear in the common extensor tendon of the arm

    Tennis Elbow

    Tennis elbow (lateral epicondylitis) is a common condition that occurs when the outer tendons of the elbow swell or…

  • close-up of a person’s cheek with small patches of melasma

    Melasma

    Melasma is a common skin condition that causes brown patches to appear on the skin, usually on the face.

  • A baby lays on a blue blanket with his legs and feet visible. Rickets is a rare disorder that affects the bones, causing them to soften and break easily. It is most common in children.

    Rickets

    Rickets is a rare disorder that affects children’s bones, causing them to soften and break easily.

  • doctor examining the ear of a young smiling girl

    Otitis Media (with Effusion)

    Otitis media with effusion means there is fluid in the middle ear. It is common in young children and usually…

  • Lung Illustration

    Sarcoidosis

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

  • Tapeworm in human intestine

    Echinococcosis

    Echinococcosis is a parasitic infection that is spread from animals to humans. The disease causes cysts and can be…

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