Suggest Treatment For Severe Irritation On The Nose

Dear doctor, I have an irritation in my nose ( on both side of nose wall- on the soft nose bone) for more than a year. At beginning it started with nose itching, and then it is pain due to both side are feeling dry and it is hurt when moving my nose. It is stink... :-( Meanwhile, the skin on my hair also started itching. My doctor gave me a tube of cream for irritation. but it does not work. Now my little baby girl has also a piece of skin on her leg has fungal infection. Is it because me??? I feel so guilt... it makes me cry.. please help. Thanks in advance, regards, Lisa