What Or Who Could It Have Been?

I have never really told anyone this as it's pretty strange so I will try and recount what happened to me as best as I can.

I have always had pretty vivid dreams but I will go through a stage where I won't dream or do not remember them but then back through a stage when I will constantly have strange dreams and vivid dreams, as in some instances things I dream will happen, and in my dreams I can taste smell feel and everything else as if I was awake.

So anyways here is my experience...

I went to bed and feel asleep pretty quickly I remember waking in the middle of the night with the feeling of my hair being pulled.

I remember fumbling around my pillow to see if I had maybe pulled my hair as it was quite long or I thought my hair elastic might had snagged onto something on my bed head as I had bars on it but I remembered I hadn't tied my hair back and couldn't find no evidence of hair or elastics so I fell back asleep a little confused.

About a week later I was sitting with a friend and I had my hair down. My friend asked me what happened to my hair. I asked her what she was talking about and she said I had a bald spot and directed my hand to where I had a patch about 3cms round of missing hair. It was practically bald as if someone had plucked out each hair individually with a set of tweezers.

I thought to myself perhaps it could be alopecia as clumps of hair fall out in that manner as I know someone who suffers from it, but then it dawned on me, I remembered the night I felt the pull on my sleep but then realised that I had never seen any clumps of hair, I would certainly remember and notice that much hair falling out!

The hair couldn't have fallen out bit by bit gradually as the hair would have started growing back at different lengths right?

I never found the hair and my hair grew back completely normal except I looked like a chicken for a few months until it was long enough to pin back. What could it have been, anyone else have something similar happen to them?