intestine with acute pain grey icon. ulcerative colitis, bloating .

abdomen abdominal ache acute anatomical anatomy biology bloating body bowel canal care colitis colon constipation diagnosis diarrhoea digestion digestive disease dysbiosis flora gastric gastroenterology gastrointestinal gray grey health healthy heartburn human icon indigestion intestinal intestine medical medicine monochrome pain science sigmoid spasm stomach symbol tract treatment ulcer ulcerative unhealthy volvulus