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In the absence of a history of injury, or absence of evidence of a beginning boil or carbuncle, consider the neck pain due to inflammation of muscles (“muscular rheumatism" ). Muscle spasm with resulting
tilting of the head and stiffness of the neck is common.
Treatment:
1. Apply dry heat to the neck for forty minutes, twice daily.
2. Rub on oil of wintergreen twice daily.**
3. Protect the neck against exposure to cold or wet.
4. Aspirin grain 10 (0.6 gram), four times a day if needed.
Note by Rob: **(2.) Oil of Wintergreen into muscles dilute 1:1 with carrier oil.
From the Book - United States Maritime Service Hospital Corps School Manual 1945 By United States War Shipping Administration page 228.