Hi. Greetings. I would suggest the following: 1. Attach pictures and send on private chat or discuss this problem over a physical direct meeting with a dermatologist. 2. If it's only a small central area of growth and other areas seem to be fine, then it may not be a hormonal issue 3. It may be related to absence of hair roots in such area since birth so the only fruitful treatment in such a situation would be hair transplant. 4. Application of newer peptide solutions or minoxidil gel may be worth a trial.
Hope this helps. Warm regards Dr Govind S Mittal.