For The Last Months My 2 Year Old Has Complained

For the last months my 2 year old has complained of itching on her legs and her skin is rough after bathing Himalaya soap. there is no rash just lots of acne type of marks and as per Doctor this is rash itching on Darsum of foot and Doctor has advised Flutivate Ointment and Atogla Cream. is this an allergy? she had suffered ITP in October 2015 and she has completed her course of medicines. After that we had done CBC and her HB is 11.7 and Platelet is around 3lacs. Should we give her to iron supplement? Please suggest.