Hello I share your concern I regular and frequent loose stools might be related to either infection or food poisoning In my opinion you should go to emergency room for stool test for ova cyst or protozoa You may require a course of antibiotics under supervision of your doctor Itching in perianal area can be related to fissure in anus or hemorrhoids You should apply lignocaine ointment for symptomatic relief to itching. Please follow these guidelines Have lots of fresh fruit vegetables and dietary fibers. Avoid constipation by taking laxative or stool softeners like liquid paraffin Sitz bath twice daily might help you by helping in better healing. You should avoid alcohol and smoking as well as spicy fatty junk and fried food Maintain good hygiene If it persists or worsens than you should see a general surgeon or proctologist for surgery and definitive treatment Hope this answers your question Wish you good health