### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Last year after months of burning in lower right stomach , I had various test ending with virtual CT Colonoscopy scan. All organs found to be clear and Consultant advised me to take Movical regularly as chronic constipation was probable cause. OK for two months then same syptoms began. Trying Lactulose in place of Movicol and after various effects including explosive BM I have tried different doses which now seem to be helping with constipation. However burning still there on and off and has never really gone away. GP seems as baffled as me. Any suggestions?

### output:

Hello, almabegg, You state that your virtual colonoscopy was negative. I also take it you have had all the blood work. Especially Thyroid, Celiac and also lactose intolerance tests. It is important to rule these out. If you have no alarm symptoms such as blood in the stool, anemia, weight loss etc. the symptom of constipation, bloating, gas and abdominal pain indicates IBS(Irritable Bowel Syn Chat Doctor.  Your doctor prescribed SYVICOL chichis called an osmotic laxative. It contains Polyethylene glycol along with Sodium bicarbonate, Sod. Chloride and Potassium chloride. It makes your colon to get more fluid or water to soften up the stool. It is effective. The dosage initially should make you have diarrhea, and after that you start slowly tapering the dose down till you have normal stool. Initially you might experience some bloating which impart of IBS anyway. If you changed to lactulose, which is related to lactose, may make symptoms worse if a person is lactose intolerant. I hope you are also following a high fiber diet and 