Open wound with 'white dots'.

Hello all,
My wife has been battling with a skin picking disorder, and it's getting out of hand. She has been on many depression meds and still is, but one thing that's taking over her life is the picking. Here is her problem: She has a zitt or something on her arm for example, and proceeds  to pick it until it becomes an open wound. Then she tells me that there are 'white things in it' (looks like white dots underneath the skin that have been exposed). What are these things? she says they prevent healing, but I think they are probably meant to be there.
Sorry to be vague, I dont know how to explain it better.

Thanks!

[LiL_Chum]

Hi there,
I have an issue with picking any zitty thing that I come across on my body...I put it down to OCD (Obsessive Compulsive Disorder) However, I have been able to stop myself with will power and training myself to focus on other things...most of the time. I find that I pick at my arms when I am bored, sitting on the toilet, etc...so maybe avoiding her triggers will help.

As far as the white dots, how big is the wound...it sounds like she has picked the top layers of skin off, to the point that you can see the pores/sweat glands.

I hope that helps a little.