Thank you for your query.
I think you should consult a trichologist for complete evaluation.You can use minoxidil
5% topical solution for your hair regrowth which is an FDA approved drug for this purpose. But dandruff
treatment and thyroid dysfunction
needs to be corrected as they can be causing hair loss .
Hope you are satisfied with the answer.
If you have any further queries feel free to ask.
Wish you good health.