Hello,
In that case, hair transplantation is one of the best techniques for hair regrowth which can be adopted. My sincere advice is to consult a trichologist. It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.