Many congenital brain defects cause minor neurological impairment. People with these types of congenital brain defects can grow to function independently. Other defects are so severe that they are fatal before or shortly after birth. Some cause significant disabilities.
I am looking into this for a friend as well. The pancreas deals with digestive juices and insulin. Have a look at your medications to see if they may have gastrointestinal effects. I can tell you that Tramadol does affect the production of enzymes in the intestine.
If you experience any of these symptoms talk to your doctor immediately. Not all chemotherapy drugs will cause this side effect. Also, it may be drugs that are given along with the chemo drugs, such as prednisone, that are causing the problems with the pancreas.