Here Is Some History Regarding My Question We Lost My

Here is some history regarding my question we lost my youngest sister the middle of last year and I have lost hair in clumps but I also colored my hair and have for years and think maybe I have over process it in spots because I had sores and blisters and now I have red rash it's no longer sore to the touch what can I do it doesnt seem to be coming in my hair is thick I also have been taking biotin.