Matt:
I don't know that your question, although it's a reasonable one, has any straighforward answer, other than to say that, "it happens sometimes." I assume, by the way, that you are talking about the back of your
neckCervical spondylosis
Head and neck glands
Herpes zoster (shingles) on the neck and cheek
Irritated seborrheic kerotosis - neck
Lymph tissue in the head and neck.
Melanoma - neck
Neck lump
Neck pain
Neck pulse
Neck x-ray
Oral cancer. If you mean your front, then you have to at least entertain the possibility that you have "razor bumps," caused by
ingrownIngrown toenail hairs from a close shave. That can be treated with some success using medicated shaving creams and topical cortisone lotions.
For back-of-neck pimples, there's not much worth doing. Oral antibiotics help temporarily, but the conditionusually isn't uncomfortable enough to warrant them.
I think you ought to show these to a doctor once, just to be sure there's nothing else going on that I can't picture.
Best.
Dr. Rockoff