A person with a subarachnoid hemorrhage must rest in order to recover from that hemorrhage. For this reason, if you are caring for a person with this disorder, be sure that the sufferer does not do anything too strenuous. If the doctor has prescribed bed rest, check to be sure they are resting. In addition, sometimes medications are prescribed to treat subarachnoid hemorrhage. If the person you are caring for is on medications, you must be sure they are given according to the doctor's descriptions.