In the subclinical form, bowel dysfunction and intoxication are absent, and balantidiasis is recognized on the basis of the endoscopic picture and laboratory data.
The symptomatology of coumadin manifest form of balantidiasis resembles dysentery. Patients complain of progressive weakness, headache, febrile fever, nausea and vomiting. At the same time, signs of colitis develop: cutting pains in the abdomen, diarrhea, tenesmus. The chair becomes liquid, mucopurulent, and then bloody; increases up to 15-20 times a day; stools have a putrid odor. In a severe form of balantidiasis, there is a rapid loss of body weight, up to cachexia.