why do i keep passing loose stools? I'll get a sudden attack when i'm on the train or somewhere cold. heart starts racing, get out of breath and feel like shitting. when i wake up in the morning, my hands would feel unbearably cold, and i would have loose stools or diarrhoea.
I've had lymphoma tumour removed in my intestines a few years back, finish my chemotherapy and i'm entering my fifth year. the loose stools get worst every year, but the CT scans and colonoscopy came back negative, so what can I do now? Is it because I do not have enough good bacteria in my colon to help form the stools? or is there some other underlying problem? I've been to numerous doctors and i'm getting desperate, i can't go out often as i would suddenly feel the urge to shit and it's really unbearable...

Summarized question: What would cause passing loose stools or diarrhea?