I have post herpetic neuralgia on the right side of my face. It presents itself in my ear canal, inside & outside of my cheek, chin, lip, gum & under my jaw accompanied by swelling. I m on gabapentin 100 mg 3xs a day along w/ naproxen. Please tell me what the swelling is caused from & how can I alleviate it. It s very painful. (I m 67 & weigh 110) Thank you for your help, Jean