I suffered with Prurigo Nodularis for 5 months. I was given steroids, shots, antibiotics. I found a forum in the UK that said to try Valtrex. I had sores all over my body. The first wk on Valtrex I saw fast healing, by 2 wks my face , back, chest, arms were clear. 4th wk legs almost clear the last thing to clear were my feet and they were awful looking. I suffered for so long and I have scars everywhere if only I took Valtrex first! I just want to spread the word! I took 2 500 mg a day for 4 wks. I hope I can help someone else.