Hello. 2 Month Ago I Found On My Neck Discoloration

Hello. 2 month ago i found on my neck discoloration Area , then i went to dermatology he gave me shampoo Ketokonozol i put on my neck 1 month but it doesn’t work. Then i went to different dermatology she get front me biopsy . Biopsy result shown not fungal and not vitiligo, doctor sad it is something different and gave me Disonide cream, i put 1 week nothing change . What do you think. This spot give depression .