Post-Herpetic Neuralgia

The present study aims to evaluate the efficacy of ultrasound-guided erector spinae plane block with steroids to relieve pain in cases of post-herpetic neuralgia, patient satisfaction, and record any complications post-injection.

This study relies on the use of a smartphone application (SOMA) that the investigators developed for tracking daily mood, pain, and activity status in acute pain, chronic pain, and healthy controls over four months.The primary goal of the study is to use fluctuations in daily self-reported symptoms to identify computational predictors of acute-chronic pain transition, pain recovery, and/or chronic pain maintenance or flareups. The general study will include anyone with current acute or chronic pain, while a smaller sub-study will use a subset of patients from the chronic pain group who have been diagnosed with chronic low back pain, failed back surgery syndrome, or fibromyalgia. These sub-study participants will first take part in one in-person EEG testing session while completing simple interoception and reinforcement learning tasks and then begin daily use of the SOMA app. Electrophysiologic and behavioral data from the EEG testing session will be used to determine predictors of treatment response in the sub-study.

Chronic pain affects 1 in 4 US adults, and many cases are resistant to almost any treatment. Deep brain stimulation (DBS) holds promise as a new option for patients suffering from treatment-resistant chronic pain, but traditional approaches target only brain regions involved in one aspect of the pain experience and provide continuous 24/7 brain stimulation which may lose effect over time. By developing new technology that targets multiple, complimentary brain regions in an adaptive fashion, the investigators will test a new therapy for chronic pain that has potential for better, more enduring analgesia.

This study is a 3-part, Double-blind, Randomized, Placebo-controlled, Multiple Ascending Dose Study to Evaluate Safety, Tolerability, Pharmacokinetics/Pharmacodynamic properties of iN1011-N17 after Oral Administration in Healthy Volunteers and Post-Herpetic Neuralgia patients, and to assess the relative bioavailability of Mesylate vs Hydrochloride salt capsules of iN1011-N17 in Healthy volunteers.