All perfect praise be to Allaah, The Lord of the worlds. I testify that there is none worthy of worship except Allaah and that Muhammad, sallallaahu ‘alayhi wa sallam, is His slave and Messenger.
May Allaah reward you generously and making you keener on fulfilling the rights of your husband over you and showing kindness to him. You should know that as long as the wife fulfills her husband's rights over her and treats him kindly, she is not obliged to investigate his health condition to take care of him despite the fact that he dislikes it.
We advise you to continue to fulfill your husband's rights over you and take care of your home and family within what your husband approves, and you should not overburden him or persist on knowing his health condition as long as he dislikes it. However, you should help him with whatever he informs you of. And whatever he chooses to hide from you, you should respect his choice. You should not force your help on him in the matters that he chooses to conceal from you. There is no doubt that you shall be rewarded for fulfilling your husband's rights over you, taking good care of your home, showing keenness on doing righteous deeds, and showing kindness towards your husband.
For more benefit, please refer to fataawa 85308 and 85167.
Allaah knows best.