Pimple On My Shoulder. 48 years experience Pediatrics. Most susceptible are teenagers from about ages 13 to 17.

However it can also affect the limbs head and neck and rarely the genitalia. My wife thinks this will get a lot of views. The arm feels a little bit num and if I try moving it the pimple and the area around it hurts.
Pimples are also called comedones spots blemishes or zits Medically they are small skin eruptions filled with oil dead skin cells and bacteria.
My arm feels slack and its like its tired. My wife thinks this will get a lot of views. She takes care of a pimple on her back. It usually occurs on the trunk often the chest and shoulders.