The literature has been reviewed to uncover the existence of head and neck pain syndromes caused by foods and food and drug combinations. Knowledge of the etiology of such syndromes may help in their treatment. At least twenty-five syndromes have been described. These include those induced by coloring and flavoring agents, alcoholic products, chocolate, coffee and tea, foods containing tyramine, vitamins, minerals, pesticides, and several others. Where possible, the active ingredients and the minimal amounts responsible for the induction of pain have been identified.