I went through hair loss a couple years ago. It lasted a couple years, then quit falling out. Until then, my motorcycle helmet looked like a rabbit's nest..
Now my hair is back..
Same had happened to my wife when she went through a bad session of respiratory and cardiac arrest. Hair fell out
for about a year or two, then came back. That happened about 5 years before she finally passed.
My hair loss happened about the time I showed prostate cancer..also could be some medication ..
Both of us have always had very abundant and healthy hair... While my wife was going through her hair loss,
the doctors explained that any stressful situation, physical or psychological, can cause hair loss in varying degrees.
Recently, talking with a beautician, she concurred. So, think back...have you been through a stressful situation
over the last year or so?
Hope this helps...