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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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  • A sad woman holds a teddy bear in an empty nursery. An early pregnancy loss is a miscarriage that occurs on its own during the first 20 weeks of the pregnancy.

    Early Pregnancy Loss

    An early pregnancy loss is a miscarriage that occurs on its own in the first 20 weeks of the…

  • Eating Disorders

    An eating disorder is a mental health condition involving an obsession with food and weight that harms a person’s emotional…

  • Ebola virus disease is caused by infection by the Ebola virus. There are five known strains, four of which affect people.

    Ebola Virus Disease

    Ebola virus disease is caused by infection by the Ebola virus. There are five known strains, four of which affect…

  • Tapeworm in human intestine

    Echinococcosis

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

  • Illustration of female reproductive system with a close-up on an embryo developing in the fallopian tube. An ectopic pregnancy happens when a fertilized egg grows outside the uterus. It can be dangerous to the mother if not treated early enough.

    Ectopic Pregnancy

    An ectopic pregnancy happens when a fertilized egg grows outside the uterus. It can be dangerous to the mother if…

  • Woman scratching her arm

    Eczema and Atopic Dermatitis

    Eczema and atopic dermatitis are rash-like skin conditions common in babies but can continue in adulthood.

  • A woman puts on compression stockings. Edema is a swelling or puffiness of part of the body, usually the feet, ankles and legs. It sometimes occurs in the face and hands.

    Edema

    Edema is a swelling or puffiness of part of the body, usually the feet, ankles and legs. It sometimes occurs…

  • Illustration of the female reproduction system and a yellow ribbon representing endometriosis

    Endometrial Cancer

    Endometrial cancer occurs in the lining of a woman’s uterus. Learn about the symptoms, diagnosis, and treatment of this common…

  • Visual difference between a normal endometrium and endometrial hyperplasia

    Endometrial Hyperplasia

    Endometrial hyperplasia is a condition in which the endometrium (lining of the uterus) is abnormally thick. There are four types…

  • Endometriosis

    Endometriosis is when the lining of the uterus grows outside of the uterus. It can be treated with medicine and…

  • Illustration of enlarged adenoid. Adenoids are tiny pieces of tissue in the back of your throat. They hang above your tonsils. They help fight infections in your body.

    Enlarged Adenoids

    Adenoids are tiny pieces of tissue in the back of your throat. They hang above your tonsils. They help fight…

  • Eosinophilic Esophagitis

    Eosinophilic esophagitis is an inflammatory, allergic disease that occurs when certain white blood cells build up in your esophageal…

  • Epilepsy

    Epilepsy is a disorder of the brain that causes seizures.

  • Man holding condom in one hand and blue pill in the other

    Erectile Dysfunction (ED)

    Erectile dysfunction is when a man cannot get or keep an erection. It can be caused by a number of…

  • mother holds and kisses her newborn baby

    Esophageal Atresia and Tracheoesophageal Fistula

    Esophageal atresia and tracheoesophageal fistula are 2 disorders of the digestive system affecting babies.

  • A young woman helps an older woman hold her tea cup as she takes a drink. Essential tremor is a disorder in your nervous system. It causes shaking movements that you can’t control, most often in your hands.

    Essential Tremor

    Essential tremor is a disorder in your nervous system that causes uncontrollable shaking.

  • A doctor examines the ear of a boy suffering from eustachian tube dysfunction.

    Eustachian Tube Dysfunction

    Eustachian tube dysfunction is when your ear is plugged with fluid. Sounds may be muffled, and your ear may feel…

  • Tired woman sitting on the stairs with bottle of water in gym

    Exercise-induced Bronchospasm

    Exercise-induced bronchospasm is when the airways in your lungs narrow during exercise, making it hard to breath. This can make…

  • close up image of a man's body suffering severe urticaria nettle rash.

    Exercise-induced Urticaria

    Exercise-induced urticaria is a condition that produces hives and other allergic symptoms.

  • A man has fainted outdoors

    Fainting

    Fainting happens when your brain does not get enough oxygen. You lose consciousness, or “pass out,” for a brief time…

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