The stool is hard and lumpy, with a very dark brown color. It's recommended to increase your water intake and consume fiber-rich foods to alleviate constipation symptoms. Since you have IBS, pay closer attention to your diet management.

The stool is hard and dark brown. It corresponds to Bristol Stool Scale type 1, which suggests that you may be constipated. It is recommended to increase fiber intake and drink enough water to soften the stool.