Table 8.

Studies of SPG block on postherpetic neuralgia

Postherpetic neuralgia
Author	Year	Medical problems	Approach	Imaging	Medication	Number of cases	Study design	Outcome
Prasanna et al. [26]	1993	Postherpetic neuralgia involving the ophthalmic division of the trigeminal nerve	Combination of stellate ganglion and sphenopalatine ganglion block, cotton tip applicator	None	Lidocaine and bupivacaine	1	Case report	Pain free
Saberski et al. [27]	1999	Sinus arrest in postherpetic neuralgia	Cotton tipped applicator, transnasal approach	None	20% lidocaine	1	Case report	No paroxysmal pain or sinus pauses immediately after block
Amster et al. [28]	1948	Herpes zoster	Cotton tipped applicator, transnasal approach	None	Nupercaine, pontocaine, monocaine	3	Case series	Relief of pain and spasm in 90% of cases