See a dermatologist who specializes in hair loss, in the meantime consider biotin supplementation.
Was your hair loss 20 years ago and the reason for transplant due to hair loss associated with thyroid dysfunction or male pattern baldness? If the latter, and if your thyroid medication is adequate, what you are currently experiencing may be due to male pattern baldness. Have you asked your doctor about this?
hi.
have you had your thyroid labs done lately? what are the results? maybe you're on too much medicine. if you are on too much medicine, that would make you hyperthyroid. (low tsh)
when i was hyperthyroid, i lost lots and lots of hair.
i'm not a doctor...just speaking from my experience. i would ask to have labs done to make sure it's not thyroid-related, but other things could be causing your hair loss as well.
good luck.