Diseases and Conditions

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

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  • A plastic model of intestines sits on a table in a doctor’s office where a patient is consulting with a doctor about her Crohn’s disease.

    Crohn’s Disease

    Crohn’s disease is an inflammatory bowel disease (IBD) that causes ulcers to form in the gastrointestinal (GI) tract anywhere from…

  • Reye’s Syndrome

    Reye’s syndrome is a rare but serious illness common in children recovering from a virus and taking aspirin. It can…

  • Flatulence/Gas

    Flatulence is another name for gas. It happens when air stays in your abdomen after you eat. It can be…

  • Hearing: Noise-Induced Hearing Loss

    Noise-induced hearing loss normally occurs from regular exposure to loud noises.

  • COVID-19 is a disease caused by a coronavirus called SARS-CoV-2, which was identified in 2019.

    Coronavirus Disease 2019 (COVID-19)

    COVID-19 is highly contagious and does not yet have an approved vaccine. Symptoms may include a cough, a fever, and…

  • Pyloric Stenosis

    What is pyloric stenosis? Pyloric stenosis is a medical condition. It is a narrowing of the opening between the stomach and the small intestine. That space is called the pylorus. It often occurs in babies younger than 6 months. It is more common in…

  • Doctor examining a child, checking her throat and tonsils. Common tonsillitis symptoms include redness and feeling like your throat or neck glands are swollen due to inflammation of the tonsils.

    Tonsillitis

    Tonsillitis is an inflammation of the tonsils that happens when they become infected by a virus or bacteria. It is…

  • A female holds her hands behind her back. Hemorrhoids are swollen or inflamed veins in your rectum or around your anus. They are very common, especially in people who are pregnant.

    Hemorrhoids

    Hemorrhoids are swollen or inflamed veins in your rectum or around your anus. They are very common, especially in people…

  • A man with food poisoning sits on the couch and vomits into a green bucket.

    Food Poisoning

    Food poisoning is a primarily intestinal illness that occurs when you eat or drink something that contains harmful bacteria, viruses,…

  • Insulin resistance means your body is unable to process all the insulin your body is making. It is linked to prediabetes and type 2 diabetes.

    Insulin Resistance

    Insulin resistance is a condition linked to prediabetes and type 2 diabetes. Insulin resistance means your body is unable to…

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

    Blood Poisoning (Sepsis)

    Blood poisoning happens when an infection enters your bloodstream and your body reacts to the infection.

  • Little girl sitting in mother’s lap at doctor’s office

    Munchausen Syndrome by Proxy

    Munchausen syndrome by proxy is a mental illness in which a caregiver acts as though the person under their care…

  • Warts are small skin growths caused by the human papillomavirus. Your doctor can recommend the best wart removal method for you.

    Warts and Wart Removal

    Warts are small skin growths caused by the human papillomavirus. You can develop warts on your face, hands, feet, and…

  • Photo of a new diaper from the top angle looking in

    Urinary Incontinence

    Urinary incontinence is the loss of bladder control. This means that you can’t always control when you urinate.

  • A man suffering from an ulcer clutches his abdomen in pain. An ulcer is a sore on the lining of your stomach or small intestine. Ulcer symptoms include stomach pain, bloating and feeling full fast.

    Ulcers - Stomach Ulcer Symptoms

    Ulcers are sores on the lining of your stomach or small intestine.

  • Sexual Dysfunction in Men and Women

    Learn about the symptoms, causes and treatment of sexual dysfunction disorders.

  • Pruritus (Itchy Skin)

    Pruritus is a medical term for itchy skin that can be caused by a number of issues including dry skin,…

  • Piriformis Syndrome

    Piriformis syndrome is a condition that causes pain or numbness in your buttocks, hip, or upper leg when the piriformis…

  • doctor checking lymph nodes of a patient

    Mononucleosis

    Mononucleosis is a contagious illness caused by the Epstein-Barr virus. The virus can be found in saliva, mucus, and other…

  • Woman with headache in front of blurry surroundings

    Migraines

    A migraine is usually an intense pounding headache that can last for hours or even days.