If one is infected with a contagious disease that doesn't have a cure. Is he allowed to still live with his family or does he have to relocate or something. And his family cannot be aware of his medical situation because he is sure it will cause more problems rather than resolving any.
One is allowed to live with his family in this situation. Rather it is one's right that the family takes care of him when he is in distress. He should disclose the problem and give the family a chance to serve him. If they are not cooperative then he may decide to leave but he should not simply move away without taking them in confidence.