Sharp neck pain is not in itself a red flag. Believe it or not there is no common worrisome cause of neck pain that is indicated by a sharp quality. In fact, oddly, sharp pains are actually a bit reassuring, despite how they feel. In isolation — with no other obvious problem — they usually indicate that you just have a temporary, minor source of irritation in the cervical spine. Serious causes of neck pain like infections, tumours, and spinal cord problems tend grind you down with throbbing pains, not “stab” you.
Some skin problems on the neck can cause neck pain, but are usually obvious — most people will identify them as “skin problems on the neck” and not “a neck problem affecting the skin.” Herpes zoster (shingles) [CDC] causes a painful rash, cellulitis [Mayo] is extremely painful but superficial, and a carbuncle[Wikipedia] … well, it’s just a super zit, basically. If you can’t diagnose that one on your own, I can’t help you!
The treatment plan may involve one or more manual adjustments in which the doctor manipulates the joints, using a controlled, sudden force to improve range and quality of motion. Many chiropractors also incorporate nutritional counseling and exercise/rehabilitation into the treatment plan. The goals of chiropractic care include the restoration of function and prevention of injury in addition to back pain relief.