He has been constipated for a few days.
他便秘了好几天。
He suffers pains when he moves his bowels2.
他大便时非常痛。
He has some bleeding from his rectum.
他的肛门出血。
He has noticed some blood in his bowel1 movements.
他发觉大便时有的血。
His bowel movements are pale, greasy3 and foul4 smelling.
他大便呈灰白色，含油脂的恶臭。
His bowel movements are grey or black in color.
他的大便呈灰白色。
He has a bloated, uncomfortable feeling after meal.
他饭后肚子感觉胀胀的，非常不舒服。或He feels bloated after eating.
He has bouts5 of abdominal6 pain.
他有一阵阵的肚痛。
He feels bloated in his abdominal area.
他感到肚子胀胀的。注：胀胀的，像（puff up），但不是真的的肿（swell up）。
The pain is mainly in the lower upper right part of the abdomen7.
痛是在肚子下半部。
He has nausea8 and vomiting9.
他有恶心和呕吐。
It is difficult or painful for him to swallow.
他吞下食物时会痛。
He has passed more gas than usual.
他放屁比平时多。
He has trouble with diarrhea.
他拉稀。