Helicobacter pylori is a gram-negativebacterium that lives inside the mucus lining of the stomach. It belongs among the proteobacteria. Many gastric ulcers are caused by H. pylori infection, although most humans are infected and not all infections lead to symptoms. Two strains of H. pylori have been sequenced.
... than males. Urethritis is a common cause of dysuria[?] (pain when urinating).
Related to urethritis is so called urethral syndrome[?]
Passage of kidney stones ...