Marital issues

I got married in the month of Decembber 2006. Thereafter two months I came to know that my wife has been suffering from epilepsy. The fact that she is suffering from epilepsy was hidden during our marriage both by her parents and herself. I have all the medical records and evidences that she is suffering from epilepsy. On questioning, my wife and her mother responded negatively and their behavior was not cooperative. I went to many Muslim scholars to seek a solution and they all advised me to cooperate with her. God blessed me with a son and due to drugs/medication which my wife was taking had a reaction on son`s health and he was treated for a long time. Thanks to Allah that he gave health to my son. In all these years I faced many problems which now seems to me unbearable. I lost 60% of my business as I look after my son both like a mother and father. I never slapped my wife nor I showed rudeness but still she never co operated with me and never discussed her illness. Besides, the doctor has advised me not have any more children. I cannot go away from home for long hours. The situation becomes more worse when I fell ill. Besides, the behavior of her mother and brothers is very rude.They have put all their burden of her daughter on me. In these 6 to 7 years the things seems to be getting out of my hands. Please help me before I make some or any decision.