Chron's and Colitis are inflammatory condtions of the bowel that are commonly diagnosed at ages 15-30 years. A colonoscopy will be able to tell the difference between the two.
Weakness and weight loss are a result of poor absorbtion of nutrients because the intestines are inflammed. Antibiotic treatment to manage infection; steroids to reduce inflammation (prednisone) and resting the bowel by not having any food by mouth; pain management is important as the bowel heals. Intravenous nutrition is important to maintain adequate fluids, amino acids, and fats.
Keep us posted on how your brother is doing. Well wishes to both of you!
more pus cell indication infection in intestine.u need stool culture with sensitivity if it positive u shoude take sensitive antybiotic under docter's recomadation.if stool culture nagative u shoude go for blood test with esr,cpr , hiv and thyroid.if all r normal then finaly u shoud go for colonoscopy.then u fix that u have ibs i mean all r normal and failed to diagnoged.lost of weight and weakness r not symtoms for ibs.
It sounds like he has IBS (Irritable Bowel Syndrome) Here is a link to some info about it:
http://ibdcrohns.about.com/od/relatedconditions/f/mucusstool.htm
As to the treatment, I just am not sure, I know that you will need to keep in close contact with your physician and stick to what ever diet he/she gives you. The tests he will be getting are good, they will help to diagnose just what is wrong.
Good luck.
Susie