Astanga Hrudaya
चिकित्सेदनुबन्धे तु सति हेतुविपर्ययम्। त्यक्त्वा यथायथं वैद्यो युञ्ज्याद्व्याधिविपर्ययम्॥२३॥
Treatment principle for diseases Even the other diseases should be treated by adopting treatments which are opposite of their causative factors. It is called as Hetu Viparyaya Chikitsa. Hetu means causative factors. If, however, the diseases reoccur or persist for long time then the Hetu Viparyaya should be given up and disease specific treatment should be adopted. It is called as Vyadhi Viparyaya Chikitsa.
english translation
cikitsedanubandhe tu sati hetuviparyayam। tyaktvA yathAyathaM vaidyo yuJjyAdvyAdhiviparyayam॥23॥
hk transliteration by Sanscript