What u need to do is to give him endless support and encourage him to see doctor, there is a 泌尿專科 in 廣華醫院, it is mainly giving medical treatment of such problem of men. You can ask your hubby to make appointment by direct calling their department and ask further details. Usually, the doctor will give medical treatment, such as "wai gor"; "sar-le-cee" etc. after checking and discussing with him.
Therefore, give him positive advise and support, then the remaining would be his turns.