They are called Keratosis pilaris and are not dangerous in anyway. They are just a cosmetic blemish that 50% of people world wide have. (i have it too!) You can treat it by using amlactin lotion or similar lotion daily, take warm (not hot) short showers, pat dry don't rub, and dont scratch or pick at the bumps. Nothing completely cures it but it can lessen the bumps! Hope this helps!! :)
One way is too scrub your arms in the shower hard!!!!! It worked for me
possibly eczema
rash on upper back arms
Flax seed helps to get rid of the bumps on the back of your arms. It will also strengthen your nails and make your hair shinier.
Most cars, its part of the suspension that allows the wheels to go up and down so you don't feel bumps in the road.
Usually little red, white, or sometimes brown bumps, kind of like acne, on your upper arms and thighs, sometimes all over your body. If your cheeks are an unnatural red color, you may have kprf
The upper arm is part of an arm and therefore there are no complete arms in the upper arm.
Arms
This sounds like eczema (I have it).
Go see a doctor. If you have them in other places you could have an allergy to a soap you are using either by bathing or in the laundry. So you could change soaps. Try an over the counter cream to help clear your bumps.
the upper extremities are your arms.
Eczema