Talk to Dermatologist on White Patches

Salam Doctors Plz guide me my son age 13 years developed a white patch on his neck around 7 month back and we treated him with lukodermin tablet,folic acid, vitix gel,vitix tablet and eczemus cream and one homeopath drops hydrocotyle mother koi 3 ya 4 month hogaye yeh sab medicine letay hoye vitamin d ka course bhi done kia 6 oral capsules ka aur deworming bhi done hai.. size main patch reduce hoa hai aur aik chota sa dot tha with remove bhi hoa mager ab aik light sa patch aur agaya hai treatment k doran abhi is week Jo red pencil se circle main hai lukodermin tablet k side effects se bhut dar lagta hai plz mujhe bhi guide karain har visit pe bolte hain k ab black spots ajayengay patch pe aur hum lukodermin stop kerdaingay mager spot nahi bataye kia kerna chaye..