Why Could I Be Losing Eyelashes?

I am 29 yr old female and I am losing some eyelashes on the middle part of my upper eyelid. Is it do to a lack of some kind of vitamin or could it be because I had an eyelash perm? But I was losing a couple before I had that done.What do you think?
Thanks for your time

Eyelash loss is often due to blepharitis, which is an inflammatory condition of the eyelids. Any mechanical manipulation may cause eyelash loss. It may happen with false eyelashes or eyelash perm. The other possible causes include hormonal problems, such as a thyroid problem (hypothyroid), and pulling eyelashes due to psychological conditions (trichotillomania). Your eyelash loss may be part of a condition called alopecia areata, which is an immunologic disorder that may cause patchy hair loss in different areas. I recommend that you see a dermatologist for this problem.