I am thirty nine years old and have lovely blonde hair that glistens when I put shampoo on it, but then after some days my hair becomes oily and when I comb it, I can see a bunch of my hair attached in my comb, that worsens my mood as I really love my hair and I am fearful about losing my hair. This is the first time that I have lost so many hair strands. What are the causes due to which I can lose my hair?