my baby's age is 5 months and 18 days . he has rashes and dryness on his body which comes from normal to severe and severe to normal.he itches his body a lot. patches are going red to black. doctor advised me to use lactobabe lotion., ducosoft shampoo and trucip oral drops. no soap , no oil , no lotion us suiting him . at first day after doctor's visit rashes lessened but again came after 4 to 5 days . what to do