Differential of trigeminal headaches &blink reflex

SUNCT (see separate entry)
Cluster
cervical (c2) myelitis with occipital headache
cavernous sinus syndrome-- aneurysms
pituitary tumor
cavernous sinus malignancy
MG

Evaluation of:
Blink reflexes were abnormal in 15 % of patients with atypical facial pain . 35 % of patients showed decreased habituation of the blink reflex. Thermal QST was abnormal in 55 % with abnormal facial pain and in all with trigeminal neuropathy. Blinks could help sort out brainstem and peripheral lesions, the trigeminal neuropathy patients. Source Forssell H et al. Neurology 2007; 69:1451-9. (authors are Finnish, and so am I)