Sudden: Japanese Prime Minister Shinzo Abe has confirmed his resignation as his health deteriorates.

At a cabinet meeting at the prime minister's official residence at 5 p.m. (4 p.m. Beijing time) on Friday, Mr. Abe, who has been plagued for nearly 50 years, has said he intends to resign as prime minister to address health problems, and Mr. Abe has told officials of the ruling Liberal Democratic Party that he intends to resign.
officials and Abe held an emergency meeting at the party headquarters to discuss the prime minister's decision.
earlier, according to NHK, Abe plans to resign to avoid obstruction of state affairs because of deteriorating health.
later cited people familiar with the matter as saying Mr Abe had decided to resign.
Abe resigned as prime minister in September 2007 due to ulcerative colitis, but senior members of the ruling Liberal Democratic Party have previously stressed that although Abe's condition appears to have deteriorated, he is now recovering and is unlikely to resign.
japanese media earlier reported that Abe suddenly vomited blood at work, while others reported that Abe was dizzy and vomiting on his way to work, with blood in his vomit.
Abe went to Tokyo's Qingying University Hospital on August 24th and again after August 17th.
prime minister's official residence that Abe was following a doctor's request to go to the hospital a week later.
Japan's Yomiuri Shimbnews newspaper quoted sources as saying Abe's return to the hospital was to receive a medical report.
Nippon TV quoted government and ruling party sources as saying Abe had gone to the hospital to treat chronic diseases, that ulcerative colitis may have worsened and that he had been treated in hospital.
abe has been suffering from ulcerative colitis since he was 17 years old and has not fully recovered, with a history of 48 years.
type of ulcerative colitis is a chronic inflammatory bowel disease caused by inflammation (swelling) of the large intestine.
(typical) symptoms include abdominal pain, diarrhea, and tiredness.
can cause endometrial ulcers in the colon and rectum.
symptoms include diarrhea, abdominal cramps, weight loss and fatigue, and the long-term risk of colon cancer is higher than in people without ulcerative colitis.
incidence is about 10 to 20 per 100,000 people per year.
the cause of ulcerative colitis is not yet known, it is generally believed to work with genetic and immune system function abnormalities, in which the immune system attacks the digestive tract cell ulcerative colitis incidence peak is 20 to 30 years old, and 60 to 70 years old.
eating irregularly and stress can aggravate the condition.
may include an increased risk of colon cancer, vascular clots and colon perforation.
ulcerative colitis usually does not affect the entire layer of the large intestine wall and almost never affects the small intestine.
shallow ulcers in the affected large intestine.
unlike Crohn's disease, ulcerative colitis does not cause fistula or abscesses.
ulcerative colitis is currently incurable.
most patients with ulcerative colitis (symptoms) can be alleviated, while first- or second-line treatment has no response (ineffective) to the rest of the patients.
a large proportion of people are currently suffering from adverse effects.
treatment for ulcerative colitis is to control inflammation, reduce symptoms and replenish any fluids and nutrients lost.
treatment depends on the severity of the patient's symptoms.
although corticosteroid hormone therapy is used in moderate to severe patients, this is not a long-term treatment because side effects may include bone loss, high blood pressure and weight gain.
standard drugs: including 5-amino salginate (5-ASA) Asacol standard treatment.
Abe said he started taking the drug in 2009, when it was approved in Japan.
Sacol spends more time on the Japanese market, then I probably won't be what it is today," Shinzo Abe said in a 2013 speech.
side effects of the drug, also known as mesharamin, may include nausea, headache or vomiting.
rarely aggravates the symptoms of ulcerative colitis.
other treatments include immunosuppressant drugs that require careful supervision and are usually used only when the patient is not responding to other treatments.
treatment is surgical removal of the colon.
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