Has enyone been diagnosed with "Genital" Post Herpetic Neuralgia. I have had pain since Sept. and my doc. says it's post herpetic neuralgia. The genital kind. Not the Shingles kind. I take 1 gram of Valtrex daily, but my hair is falling out. Does anyone have this and how long does it last? I have a hard time sitting and wearing underwear. I don't have lesions only pain.