<s>[INST] I have constant pain in my head and have been diagnosed with POSTHERPETIC Neuralgia. I am taking Lyrica which doesn t help at all. I rub Capsasin into my hair and it just burns. Is there anything else I can do to stop the pain. It is unbearable. Thank you. [/INST] Hi Dear, Understanding your concern. Postherpetic neuralgia is a complication of shingles, which is caused by the chickenpox virus. If you experience persistent pain due to postherpetic Neuralgia you should consult neurologist for proper examination. Post-herpetic neuralgia is easy to diagnose based on your symptoms and medical history. Doctor may prescribe lidocaine patches, anticonvulsant gabapentin like Neurontin other than lyrics and in case of severe pain doctor may also prescribe stronger painkiller like tramadol. For now, you can apply anesthetic cream for relief from pain and itchiness. Hope your concern has been resolved. Get Well Soon. Best Wishes, </s>