Diseases and Conditions

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

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  • Benign Breast Conditions

    A benign breast condition is a lump, cyst, or nipple discharge that is not cancerous. It can affect men and…

  • Benign Paroxysmal Positional Vertigo (BPPV)

    Benign paroxysmal positional vertigo (BPPV) is an inner ear problem that causes dizziness.

  • Benign Prostatic Hyperplasia (BPH)

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

  • Bipolar Disorder

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

  • Bladder Stones

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

  • Blepharospasm

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

  • Bloating

    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…

  • Blood Poisoning

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

  • Bone Cancer

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

  • Breast Cancer

    Breast cancer is a cancer that begins in breast tissue. It usually shows up as one of three types of…

  • Breast Pain in Women

    Breast pain is any level of discomfort or pain in one or both breasts. It’s more common in younger women…

  • Bronchiolitis

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

  • Burners

    Burners are minor injuries to the nerves between your neck and shoulder. They send a burning sensation down your arm…

  • Burning Mouth Syndrome

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

  • Bursitis of the Hip

    Bursitis is the painful swelling of bursae. Bursae are fluid-filled sacs that cushion your tendons, ligaments, and muscles.

  • Cancer

    Cancer is a collection of many diseases that all involve growth of abnormal cells.

  • Canker Sores

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

  • Cardiomyopathy

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

  • Carpal Tunnel Syndrome

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