IBS symptoms can change, but signs and symptoms that need to be discussed with the doctor include:5
- · new symptom onset at age 50 or over
- . blood in the stool – fresh red blood or the stool having a black, tarry appearance
- anaemia
- fever
- unexplained weight loss
- fever, shaking chills, or night sweats
- nighttime symptoms that wake the person up, such as diarrhoea
- changes in the usual IBS symptoms