question: My sister has lupos and shingles on her left eye and the doctor said there is a nerve damaged on her head almost 3 weeks now the eye is better no more shingles now shes suffering for her nerve damaged on her head.doc give her a painkiller ang vit b12.. but shes wondering how long this will take.the pain attack her anytime and very painful....there is a possble to get heart attack bec of pain and how long with take the treatment for her nerve damaged on head,she has numbness tears on her eyes too..thank you