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September 1954

GREAT OCCIPITAL-TRIGEMINUS SYNDROME AS REVEALED BY INDUCTION OF BLOCK

Author Affiliations

SOUTH BEND, IND.

AMA Arch NeurPsych. 1954;72(3):335-340. doi:10.1001/archneurpsyc.1954.02330030069007
Abstract

THIS TRIPARTITE syndrome presents symptoms (1) confined to the distribution of the great occipital nerve, (2) shared by the trigeminus, or (3) shown by the trigeminus alone, as a nociceptor to passive stimulation by the vulnerable great occipital nerve.

In every case alcohol block (Fig. 1) relieved all symptoms. Pinprick verification of numbness was made in all cases; it presaged relief lasting 6 to 12 months, permanent relief being more frequent than recurrence.

At times the needle piercing the great occipital nerve produced pain radiating to the homolateral supraorbital notch (Fig. 1; Table 3).

Most of the items in Table 3, together with relief of all symptoms on block of the great occipital nerve, suggest a functioning contact between the great occipital nerve and the trigeminus. According to Ramón y Cajal,* only those fibers derived from the ophthalmic division of the trigeminus reach the lowest level (C 2) of the

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