This is Dr. David
you could have a fungal infection around the nipple if the area is itchy and if you have fluid coming out.
you need a mammogram and breast ultrasound and blood testing to check your prolactin levels. high prolactin blood levelsl can cause nipple discharge.
when was your last breast mammogram?
then you should get a mammogram and breast ultrasound scan.
at age 53, you need to start with breast imaging
and you should see your GP doctor about this.