My DH was severly consitpated from birth
he was prem and his bum hole was too small for him to poo it out- so we used to go up to 2 1/2 weeks in between motions
He would be screaming in pain until i came out and then it would stink like stagnent water
in the end we got his bum hole stretched- he was having an operation for something else so they did it whilst he was under- he was 11 months old
we tried the brown sugar, massage etc
the best thing that worked was putting him in jolly jumper and the pressure and standing upwards would sometimes works , that and a hard stomach massage in a L shape from his side downwards
now he is older, i am finding that he is having bowel blockage problems. So giving him benefibre everyday to bulk up his stools and parachoc to make it slide out easier. We also gave him Actilac when he was little - which is a natural laxative, with very little results.
its soo frustrating- i am looking into the natropath route now as well to balance everything up and help him out!
there are natural oils you can add to their foods and milk as wel, which can help with constipation so it slides out easier for them- check with your health food shop!
take care and goood luck
odette