牵肠挂肚 [- chánɡ ɡuà dù]be very worried about; be deeply concerned; be in deep distress and feel anxiety; cause deep personal concern; cause extreme worry; feel deep anxiety about:
•¶ 尽量多给家里写信， 免得你母亲牵肠挂肚。 Write home as often as possible so as to relieve your mother from anxiety.