Can this be dermatofibroma? Had this for about 15 years. (photo)

I'm 18 going on 19 years old. For as long as I can remember I have had this lump, about 15 years. I would always feel it when brushing my hair and have played with the bump on my scalp very often. I never hurts. Never bleeds. Only sometimes gets irritated when I brush my hair too hard. I am not concerned it's basal cell carcinoma. It never grew in size. I just always wanted to know as to what it was and the only thing that fits the description is dermatofibroma.

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