My interest is about my son. He's 23 yrs old and 1 yr ago he had a seizure. A mass was found on his right frontal lobe of his brain. A biopsy was done and Encephalytis was diagnosed. He was treated with Kepra and Prednisone for 3 months and released. Less than 2 wks past when he had another seizure. Went back on Kepra and Prednisone and a second biopsy was performed. The mass was then diagnosed as Vasculitis with no known cause. He began being treated with a chemo drug called Cytozan for about 4 mos. It was stopped for about 2 weeks and his platelets dropped to 7. He had to have 2 units of platelets. Two weeks have passed and his platelets have come back up to 182 which is within the normal. Now his white blood count and red blood count has dropped dramatically. White is 1.6, red is 3.87. White might be the cause? Can't get answers we need. Can anyone help me?