Always itching ear since many months.

Since many months my son suffering from ear itching problem.. Have been to pediatric doc.. He has wax inside.. Use Dewax.. No results.. Still I took to eat gave ointment monetising furore and furious acid cream n Momeflo nasal spray..he said need to clean wax..asked to visit two weeks later.. Asked to visit dermatologist for skin type.. May be Atopic child..his ear skin has becum very sensitive due to sever itching..he can't resist mostly in d night times.. Plz advise..am really worried about his ear.. He just 3.10..d spray which was prescribed had instructions not to be used for small kids.. So plz suggest.. What kind of precautions care remedies can I take to over come his itching drynesd problem..he usually have white flakes on his head.. Very sensitive and dry skin though I use atogla lotion for him and coconut oil for hair...plz suggest.. At what stage it is necessary to remove d wax of such small kid via ent doc.. ..