Hi, I had gone through your question and understand your concerns. Anxiety, stress are often conseguences of traumatic brain injury ( Post-traumatic stress disorder). Gastroenteric disorders can be caused or aggravated by stress, anxiety, depression, but can result and from other conditions such infection, irritable bowel syndrome, colitis etc.I suggest you to consult your primary care Doctor and discuss as above and treatment modalities. Hope this answers your question. If you have additional questions or follow up questions then please do not hesitate in writing to us. I will be happy to answer your questions.