<s>[INST] My fifteen daughter has this bald spot little larger than a quarter in her hair.we just noticed it cause she has long hair.should we be concerned?will it grow back or will she loose more if she does nothing?why did this happen?did she pull on her hair to much when combing it or should she see a doctor before more falls out? [/INST] Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. As per your case history your daughter is having alopecia aerata, my treatment advice is - 1. Use a good herbal hair oil and shampoo for routine use. 2. Apply a Tacrolimus 0.03% ointment on it. 3. Take an iron supplement and vitamin B12 supplement. Hope I have answered your query. Let me know if I can assist you further. </s>