I think mangala dosha is called mangalika dosha when seen from marriage point of view. As Mars position in one's birth chart decides the way the person goes for marriage ? If mars is positioned at wrong places which are seen significant for marriage, then it is called Mangala dosham. If someone is seen to have mangala dosha, then there arises issues and concern when the marriage time for the karaka is passed. Rudraksha for mala on ommrudraksha is possibly the remedy for the managala dosham.