Diseases and Conditions

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

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  • Deep Vein Thrombosis

    Deep vein thrombosis (DVT) is a blood clot deep down in a vein, usually in your legs. DVT is common…

  • Dementia

    Dementia isn’t a disease. It’s a group of symptoms that can be caused by brain damage. It’s not related to…

  • Depression

    Depression is a mood disorder that affects people of all ages and is different for everyone. A person who has…

  • Diabetes

    Diabetes occurs when your body doesn’t make or use the hormone insulin properly.

  • Diabetes Insipidus

    Diabetes insipidus is a hormone disorder that occurs when the body doesn’t produce enough antidiuretic hormone (ADH) or doesn’t use…

  • Diabetic Ketoacidosis

    Diabetic ketoacidosis (DKA) happens when your blood sugar is high and your insulin level is low. This imbalance in the…

  • Diabetic Nephropathy

    High levels of sugar in the blood can damage tiny blood vessels in your kidneys. This can cause kidney disease,…

  • Diabetic Neuropathy

    Diabetic neuropathy is a type of nerve damage that happens in people who have diabetes.

  • Diabetic Retinopathy

    Diabetic retinopathy is an eye condition that affects people who have diabetes. This condition can cause blurry vision and progressive…

  • Diaper Rash

    Diaper rash is a red rash found on a baby’s bottom or genital area. It is very common and can…

  • Diverticular Disease

    Diverticular disease is a group of conditions that affect your large intestine (colon). It involves small pouches or sacs, called…

  • Down Syndrome

    Down syndrome is a genetic disorder that causes physical problems and intellectual disabilities.

  • Dysmenorrhea

    What is dysmenorrhea? Dysmenorrhea is the medical term for pain that women have before or during menses (known as their period). It usually is not serious. Symptoms of dysmenorrhea Menstrual cramps can feel like a dull ache or a shooting pain. They most often

  • Dyspareunia

    Dyspareunia is painful sex for women and can also cause pain during tampon use. Dyspareunia can have many causes.

  • Dysphagia

    Dysphagia means difficulty swallowing. If you persistently have trouble swallowing or can’t swallow at all, you may have dysphagia.

  • E. coli Infection

    E. coli infection is caused by E. coli bacteria (germs) that are found on food and in the environment. It…

  • Ear Infection

    Ear infections are one of the most common conditions in children, especially younger children. They are caused by a bacterial…

  • Early Pregnancy Loss

    Early pregnancy loss is known as a miscarriage. It is a pregnancy that ends on its own in the first…

  • Eating Disorders

    An eating disorder is an obsession with food and weight that harms a person's well being. There are 2 main…

  • Ebola Virus Disease

    Ebola virus disease (EVD) is a rare but serious disease caused by infection of the Ebola virus.