How is postherpetic neuralgia diagnosed (PHN)?

PHN usually is diagnosed when a patient’s pain lasts more than 30 days after an attack of shingles or for more than 90 days after rash onset.

Last reviewed by a Cleveland Clinic medical professional on 03/14/2016.

References

Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission. We do not endorse non-Cleveland Clinic products or services. Policy