Diseases and Conditions

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


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  • Woman performing breast exam

    Benign Breast Conditions

    While breast abnormalities are often associated with cancer, there are many other benign conditions women (and men) need to be…

  • blurred, spinning picture of a person’s feet as they walk through fall leaves

    Benign Paroxysmal Positional Vertigo (BPPV)

    Benign paroxysmal positional vertigo can be caused by problems with the inner ear related to ear infections, family history, or…

  • Benign Prostatic Hyperplasia (BPH)

    Benign prostatic hyperplasia (BPH) is the medical term for an enlarged prostate. This condition is associated with aging and mimics…

  • Two-faced woman, one happy and one sad, holding neutral mask in between

    Bipolar Disorder

    Bipolar disorder is a mental illness that causes extreme mood swings between happy and sad. People of all ages and…

  • X-ray of woman’s pelvis, showing bladder stones

    Bladder Stones

    Bladder stones are small crystals that form in your urine. They are hard and become trapped in your bladder. They…

  • Woman holding eye in pain


    Blepharospasm is a rare condition that causes your eyelid to blink or twitch. You can’t control it. It’s caused by…

  • Hands grabbing a bloated stomach


    Bloating occurs in your abdomen. It happens when your GI tract fills with air or gas. Your stomach feels tight…

  • Blood Clots

    Blood clots are differently sized clumps of blood that have formed inside your body. They can be harmful if they…

  • red and white blood cells traveling through a vein in the human body

    Blood Poisoning

    Blood poisoning has nothing to do with poison. It’s caused when bacteria enter your bloodstream. That can happen through burns,…

  • X-ray of image with red highlighting area of cancer

    Bone Cancer

    Bone cancer is cancer of the bones. Most cases of bone cancer start in other areas and spread to the…

  • woman dressed in pink wears a pink ribbon on her chest

    Breast Cancer

    Breast cancer is the second most common cancer among women, but its death rate has declined over the last few…

  • Close-up cropped portrait of young woman with breast pain touching chest

    Breast Pain in Women

    Breast pain in women can be caused by many factors, most of which are not serious health threats.

  • mother holds baby being checked by a doctor with a stethoscope


    Bronchiolitis is a common lung infection in infants and young children. It is usually caused by a virus. RSV is…

  • a young athletic woman grips her neck and shoulder and grimaces in pain


    Burners are minor nerve injuries that occur between your neck and are common in people who play contact sports.

  • Close-up of man holding his mouth in pain

    Burning Mouth Syndrome

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

  • A businessman holding his hands on his aching hips

    Bursitis of the Hip

    Bursitis of the hip is the swelling of the bursae, fluid-filled sacs that cushion tendons, ligaments, and muscles. It can…

  • doctor holding patient’s hand


    Cancer is a collection of many diseases that all involve the growth of abnormal cells. Some common forms are skin…

  • Close-up of child with canker sore on inside of lip

    Canker Sores

    Canker sores are small, thin sores in your mouth. You might get them on the inside of your lips or…

  • A woman having chest pains, with her hands over her heart


    Cardiomyopathy is a disease of the muscles in the heart. It causes your heart muscles to become enlarged. This can…

  • A man working at a computer, grabbing his right wrist in pain

    Carpal Tunnel Syndrome

    Carpal tunnel syndrome is a painful disorder that occurs when the tissues in your wrist get swollen or inflamed and…