1. Painful sores in the stomach lining
    Stomach ulcers (also called gastric ulcers) are breaks in the lining of the stomach that develop due to damage. They can cause a burning or gnawing pain in the top and middle of the abdomen.

    Stomach Ulcer: Symptoms, Causes, and T…

    patient.info/digestive-health/dyspepsia-indigestion/…
    Stomach ulcers, which are also known as gastric ulcers, are painful sores in the stomach lining. Stomach ulcers are a type of peptic ulcer disease.

    Stomach Ulcer: Causes, Symptoms, and D…

    www.healthline.com/health/stomach-ulcer
    Peptic ulcers are open sores on the inner lining of the stomach and the upper part of the small intestine. A peptic ulcer in the stomach is called a gastric ulcer.

    Peptic ulcer - Symptoms and causes - Ma…

    www.mayoclinic.org/diseases-conditions/peptic-ulc…
  2. Cleveland Clinic
    https://my.clevelandclinic.org › health › diseases

    Stomach Ulcer: Signs, Symptoms, Causes & Treatment - Cleveland …

  3. Mayo Clinic
    https://www.mayoclinic.org › diseases-conditions › ...

    Peptic ulcer - Symptoms and causes - Mayo Clinic

  5. Healthline
    https://www.healthline.com › health › stomach-ulcer

    Stomach Ulcer: Causes, Symptoms, and Diagnosis - Healthline

  6. National Center for Biotechnology Information
    https://www.ncbi.nlm.nih.gov › books

    Gastric Ulcer - StatPearls - NCBI Bookshelf

  7. Johns Hopkins Medicine
    https://www.hopkinsmedicine.org › he…

    Stomach and Duodenal Ulcers (Peptic Ulcers) - Johns …

    Learn about the causes, symptoms, diagnosis, and treatment of peptic ulcers, which are sores on the lining of your stomach or duodenum. Find out how to prevent complications such as bleeding, perforation, and obstruction.

  8. nih.gov
    https://www.niddk.nih.gov › health-infor…

    Symptoms & Causes of Peptic Ulcers (Stomach or …

    Peptic ulcers are sores in the stomach or duodenum that can cause abdominal pain, nausea, and bleeding. Learn about the common causes, such as H. pylori infection and NSAIDs, and how to prevent and treat them.

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  10. 百度百科
    https://baike.baidu.com › item › 胃溃疡

    胃溃疡 - 百度百科

    胃溃疡（或称为gastric ulcer, GU）是一种常见的消化系疾病，最常指胃内壁出现溃疡。 它的发病原因主要为长期的幽门螺杆菌感染和非甾体类抗炎药物（例如NSAIDs）的过度使用引起胃黏膜发生破损。