Chiropractic, Medication, and Self-Care for Acute Neck Pain   Eligibility     Participants must be at least 18 years old with a recent on-set of neck pain (duration 3-12 weeks). They must not have had previous neck surgery, and must not be receiving on-going neck-pain treatment from other providers.   Participant involvement     Prospective participants first will complete a screening to determine if they are eligible. Those who are eligible, and who consent to be part of the study, will be randomized to one of three treatments: Chiropractic manipulation, medication, self-care advice. There will be up to 12 weeks of chiropractic treatment, with the exact number of treatments to be determined by the chiropractor. Those randomized to receive medication may be prescribed acetaminophen, NSAIDs, muscle relaxants and/or mild narcotics, with activity modification as necessary. Those randomized to self-care advice will attend two one-hour sessions about work ergonomics and daily life activities. They will practice recommended postures and body mechanics, and receive a take-home booklet.     Participants will complete questionnaires about their condition seven times over one year (twice at the beginning of the study, and then at 3, 6, 12, 26, and 52 weeks after treatment begins). Participants also will have the mobility of their neck tested at the beginning of the study, and then 6 weeks after treatment begins.   How to apply     Please email Pat Holmes, the Recruitment Coordinator at Northwestern Health Sciences University.