Gastritis, also known as acute gastric mucosal erosion, is related to lymphocytic gastritis and gastritis, familial giant hypertrophic, and has symptoms including dyspepsia and gastric irritation. An important gene associated with Gastritis is GAST (Gastrin), and among its related pathways/superpathways are Innate Immune System and IL-1 Family Signaling Pathways. The drugs Histamine and Nizatidine have been mentioned in the context of this disorder. Affiliated tissues include spleen and t cells, and related phenotype is digestive/alimentary.