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L. Kudrow, MD
Calif Med Clinic for Headache Inc 16542 Ventura Blvd Encino, CA 91436

Arch Neurol. 1976;33(2):143-144.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

To the Editor.—

As noted by Vijayan and Dreyfus in their recent, excellent report, "Posttraumatic Dysautonomic Cephalalgia: Clinical Observations and Treatment" (Arch Neurol 32:649, 1975), paroxysmal, unilateral, vascular headache (migraine) may have its onset following trauma, independent of the site of injury.¹

Because of the association of injury site and dysautonomic changes among their five patients, a cause and effect relationship is assumed. That the vascular headache is secondary to third-order neuronal injury is also an assumption.

It should be noted that the negative results from the sweat test and positive results from the pupillary function tests correctly place the lesion in the pericarotid sympathetic plexus, which anatomically begins superior to the hyoid cartilage. As described by the authors, possibly one (case 1) of the five patients was injured in this area. In fact, injury in two patients (cases 3 and 5) is due to a "whiplash" injury. By . . . [Full Text PDF of this Article]

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