My baby is 2 yrz old he had sum rashes in both of his leg which got treated by the doctor bt as dayz pass on sum kinda black marks came all over his legs nd he getz very itchy.Various pediatricians recommended calamine lotion,calapure lotion and dr.Reddy's skin lotion bt itz nt fading away due to extreme itchyness he is jst scratching dem and making them worse.What kind of lotion wil b suitale for this problem