A peptic ulcer is a sore that forms on the lining of the stomach, small intestine (usually the duodenum), or esophagus. These ulcers occur when the protective mucus layer of the digestive tract is damaged, allowing stomach acid to erode the tissue.
AIDS, or Acquired Immunodeficiency Syndrome, is a medical condition caused by the Human Immunodeficiency Virus (HIV). Here’s a comprehensive overview:
AIDS (Acquired Immunodeficiency Syndrome): This is the most severe phase of HIV infection, where the immune system is significantly compromised. It’s diagnosed when the CD4 cell count drops below 200 cells per cubic millimeter of blood or when certain opportunistic infections or cancers are present.
Human Immunodeficiency Virus (HIV) is a virus that attacks the immune system, specifically the CD4 cells (T cells), which are crucial for fighting off infections. Without treatment, HIV can lead to Acquired Immunodeficiency Syndrome (AIDS), which is the most severe phase of HIV infection. Here’s an overview of key aspects: