Human digestive system digestive system is subject to a wide range of disorders many of which can be congenital. Mouth diseases can also be caused by pathogenic bacteria, viruses, fungi and as a side effect of some medications. Mouth diseases include tongue diseases and salivary gland diseases. A common gum disease in the mouth is gingivitis which is caused by bacteria in plaque. The most common viral infection of the mouth is gingivostomatitis caused by herpes simplex. A common fungal infection is candidiasis commonly known as "thrush" which affects the mucous membranes of the mouth. There are a number of esophageal diseases such
Diverticulitis temporary, but it may be permanent, depending on the severity of the case. Most of the time, several months later after the inflammation has healed, the patient undergoes another major surgery, during which the surgeon rejoins the colon and rectum and reverses the colostomy. Diverticulitis most often affects the elderly. In Western countries, diverticular disease most commonly involves the sigmoid colon (95 percent of patients). The prevalence of diverticular disease has increased from an estimated 10 percent in the 1920s to between 35 and 50 percent by the late 1960s, and 65 percent of those currently 85 years of age