Ulcerative colitis at what the special characteristics of each type

Ulcerative colitis have two classifications. On the basis of classification and severity of the disease by Category.
According to the severity can be divided into three:
(1) mild: The most common type, usually involving only the distal part of the colon, and the illness was light, less than four times the daily diarrhea, abdominal pain, we serum or rare, the lack of systemic symptoms and signs.
(2) Medium: range between mild and severe, sudden onset, diarrhea 4 1 5 this day, and blood will Xibian, heavier abdominal pain, fever, weight loss, anorexia, there are gastro-intestinal, performance.
(3) severe: onset of intense, and there were significant diarrhoea, blood in the stool, sustained severe abdominal pain, low blood pressure can occur, or even shock.
On the course can be divided into the following four types:
(1) early-onset: that no previous history of seizures and for the first time, the severity ranges can be transformed into other types.
(2) chronic recurrent type: Clinical Most lesions of the small, lesser symptoms, often remission, but easy to relapse, better prognosis, the majority of salicylic acid,sulfasalazine treatment effective.
(3) chronic persistent: a wide range of diseases, sustainable after the first attack, ranging from mild diarrhea, blood in the stool, and often continued for more than six months, there are acute.
(4) the outbreak of acute type: rare onset of intense, serious local and systemic symptoms, often high fever, diarrhoea water samples, acute colon expansion, prone to gastrointestinal hemorrhage and the other complications of intestinal obstruction and intestinal perforation. Fulminant urgent cases with cortical hormones, blood transfusion and other treatment, and poor prognosis, and some cases if not promptly treated, often in the two weeks of the death.