Dear Sir,
I am from Chittagong, Bangladesh, I have only a son who is 18 months old, when he was 10 months he started to walk after someweeks he could run easily but since last June he couldn't walk after that he couldn't stand, I saw him many child spacialist in Chittagong, they suggest he has no major problem and prescribed some vitamin & calcium pills but after one month he has no change, now I am to much worried about my son, please advise what will i do ?