https://www.selleckchem.com/products/gcn2-in-1.html A 50-year-old male, presented with a two-months history of ascending paresthesias, with continuous twitchings over the body, associated with insomnia. His electromyography (EMG) revealed neuromyotonia and was diagnosed as a case of peripheral nerve hyperexcitability (PNH) syndrome due to Leucin-rich glioma-inactivated 1 (LGI1) antibody. He showed significant improvement with intravenous immunoglobulin and carbamazepine. Acute necrotizing encephalopathy (ANE) is a rapidly progressive encephalopathy seen commonly in children triggered by various prodromal viral infections, most common being influenza virus and Human herpes virus-6. We report two rare cases of ANE preceded by Chikungunya infection. A 13-year old girl presented with a three-day history of headache, fever, seizures, and altered sensorium. Another 42-year old man presented with two days history of fever and altered sensorium. Both were suspected to have viral encephalitis. Evaluation revealed serum positivity for Chikungunya virus. In both cases, diagnosis was clinched by characteristic bilateral symmetrical thalamic lesions with central necrosis and hemorrhage along with lesions in cerebral white matter, brainstem, and cerebellum. ANE is reported to have high morbidity and mortality. To the best of our knowledge, this is the first report of ANE post-Chikungunya infection. Apart from being rare etiologically, the patients had excellent response to steroids. ANE is reported to have high morbidity and mortality. To the best of our knowledge, this is the first report of ANE post-Chikungunya infection. Apart from being rare etiologically, the patients had excellent response to steroids.Erector spinae plane (ESP) block is a recently introduced regional technique for pain management. However, its usefulness for perioperative analgesia in cervical and thoracic spine surgeries is underutilized. In this case series, we reviewed the case records of seven patients