Chronic Telogen Effluvium or Dupa? (Photos)

About 4 to 3 years ago, I started to shed hair. As in, every time I pulled gently it came out without any pain. The whole Scalp is thin now, and some thinning can be seen on the sides also the back. I have thelessimia minor (If This Helps), I was also prescribed to take a medicine called "Folic Acid" l, which I discontinued three week ago. So, what I want to know is that whether this is Chronic Telegen Effluvium or Dupa.