A.L.
It could be Keratosis Polaris (Chicken skin) I have this only on my upper arms, but my daughter has it on her upper, lower, and her calves. Try looking it up to see if you have this. There are different levels of it. Mine do not bother me at all except for sometimes being able to see them and having rough sandpaper arms, but my daughters can get down right painful if her skin is dry.