"nor should it be diagnosed if someone bites"

I just discovered trich today, and at first it sounded like exactly what I've been experiencing for the past decade, give or take. I got a 59% (severe) result on this quiz. But then I came across this line in an article about the DSM5 section on trich: "nor should it be diagnosed if someone bites instead of pulls the hair," and now I'm not so sure.

I spend hours every day "messing with my hair," as I usually put it. When I'm sitting in my car, supposed to be driving somewhere. When I'm actually driving (NOT a good idea!). When I'm in a business meeting. When I'm supposed to be working on something. When I'm stressed, upset, tired, or bored. When I'm not any of those things, and I just happen to run my hands through my hair and then it starts.

My behavior is usually focused on my head hair--hunting down split ends and hairs that feel rough at the bottom. I often bite off the end (and usually chew and swallow it) or else break it with my fingers or nails or cut it off with scissors, since the end of the hair is where the problem is. I'll also run hairs through my teeth and bite them off wherever there's a weak point. But I also regularly pull out hairs and usually bite off and swallow the root. (For example, pulling out hairs makes a great alternative to scratching an itch. Makes perfect sense.) On rare occasion, I also pull out arm hairs, leg hairs (the first time I did that, it was for 3 hours straight), and pubic hairs.

So there's definitely hair pulling involved, but it's mixed in with biting, breaking, and cutting. And it's focused on specific types of hairs (damaged ones... though sometimes I'll make do with ones that are just extra-thick, curled or bent from having been slept on, or slightly irregular in some way... or perfectly fine hairs, just because). The behavior is compulsive and disruptive to my life, so it's definitely a problem. But the DSM5 excludes biting, which is predominant in my behavior (except when I have scissors handy), and that got me thinking...

Is this trich?

I'd really like your input.


P.S. I also discovered dermatillomania today, and that fits my "messing with my face" behavior exactly. (That lovely compulsion eats up another .5-3 hours every day. No wonder I never have any time!)

Addendum: I just realized that it kind of sounds like I'm asking for a diagnosis. That's not what I meant at all--I'm just wondering if what I described lines up with anyone else's experience, or if it doesn't sound familiar.