Achlorhydria associated with Helicobacter pylori infection may respond to H. pylori eradication therapy, although resumption of gastric acid secretion may only be partial and it may not always reverse the condition completely.Antimicrobial agents, including metronidazole, amoxicillin/clavulanate potassium, ciprofloxacin, and rifaximin, can be used to treat bacterial overgrowth. Achlorhydria resulting from long-term proton-pump inhibitor (PPI) use may be treated by dose reduction or withdrawal of the PPI. Prognosis
Little is known on the prognosis of achlorhydria, although there have been reports of an increased risk of gastric cancer.A 2007 review article noted that non-Helicobacter bacterial species can be cultured from achlorhydric (pH > 4.0) stomachs, whereas normal stomach pH only permits the growth of Helicobacter species. Bacterial overgrowth may cause false-positive H. pylori test results due to the change in pH from urease activity.Small bowel bacterial overgrowth is a chronic condition. Retreatment may be necessary once every 1–6 months. Prudent use of antibacterials now calls for an antimicrobial stewardship policy to manage antibiotic resistance. See also
Atrophic gastritis
Fundic gland polyposis
Hyperchlorhydria
Isopropamide

References


== External links ==
Calamine, also known as calamine lotion, is a medication used to treat mild itchiness. This includes from sunburn, insect bites, poison ivy, poison oak, and other mild skin conditions. It may also help dry out skin irritation. It is applied on the skin as a cream or lotion.Side effects may include skin irritation. It is considered to be safe in pregnancy. Calamine is a combination of zinc oxide and 0.5%  ferric oxide (Fe2O3). The lotion is produced with additional ingredients such as phenol and calcium hydroxide.The use of calamine lotion dates back as far as 1500 BC. It is on the World Health Organizations List of Essential Medicines. Calamine is available over-the-counter as a generic medication. Medical uses
Calamine is used to treat itchiness. This includes sunburn, insect bite, or other mild skin conditions. Effectiveness
The FDA recommends applying some topical over-the-counter skin products, such as calamine, to absorb the weeping of the skin caused by poisonous plants such as poison ivy, poison oak, and poison sumac. For relieving the pain or itching caused by these plants, the FDA document recommends a cold water compress and topical corticosteroids. References
External links
"Calamine". Drug Information Portal. U.S. National Library of Medicine.